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Improvements

- Use graphs on p. 337 339 341
- Better notes on slope!
- Freefall! have students determine reaction time

with ruler. Bigger notecards would be better.

(better later I think) - Determine heights based on dropping things!

- Schedule
- Friday
- Check review displacement graph homework
- Displacement graph notes
- Monday 3/11
- Review homework graphs
- Tuesday - No class
- Wednesday - No class
- Thursday
- Return quizzes!
- Slow glider lab
- Friday
- Position (displacement) graph quiz

Bell Work (on 2.1 sheet)

- Skiers have set world records by reaching speeds

of over 240 km/hr. How many miles per hour is

this? (1 km 0.621mi)

Bell Work 3/5/14

- Start a new BW sheet titled x, v, a
- Calculate the density of an object with a mass of

15.0 g and a volume of 5.0 cm3. - Calculate the mass of an object with a density of

55.0 kg/m3 and a volume of 20.00 m3. - Calculate the volume of an liquid with a mass of

101 g and a density of 32 g/mL .

What is physics?

- the study of matter, energy, and the interaction

between them - How much weight can this bridge hold?
- How should we launch this projectile?
- How fast can one drive around this curve?
- What will the temperature in the room be?
- How does sunlight heat Earth?
- How did the universe begin?

- Today you are going totakes notes on distance,

displacement, speed, velocity. - So you candevelop an understanding of how to

describe motion and solve motion problems. - Youll know youve got it when you can
- Accurately complete the notes sheet questions
- Define differentiate between distance and

displacement - Define differentiate between speed and velocity

Distance

- The length of the path described by an object

moving through space - OR
- Length of the path something travels
- Units of length
- mi, km, m, yd, ft, in, cm,
- No / sign!
- Ex 4.0 mi 35.0 km

Displacement

- The change in position of an object
- Distance between starting point and ending point

of object - Includes direction
- Can be negative (negative represents direction)
- Is always a straight line
- Units of length
- mi, km, m, yd, ft, etc.
- Examples
- 4.0 miles north
- 35.0 km _at_ 35o

Displacement vs. Distance

- Similarities
- Both measure lengths
- Same units
- Differences
- Displacement has direction, distance doesnt
- Displacement may be negative (negative direction)
- Displacement is always a straight line

Displacement vs. Distance

- The track is 0.25 mi. Thomas runs around the

track 4 times, then collapses exactly where he

started. What distance did he run? What was his

displacement?

Displacement vs. Distance

- Ok, now you know the difference between

displacement and distance! - When were math problems or graph problems in

here, we usually wont worry about the

difference. Youll get into that more in

physics. - Well use the variable x for both. When we did

density, we used the variable D for density.

It seems strange to use x for displacement, but

thats how it is yo!

Rates

- Anything measured with respect to something else.

- Ex How quickly water is leaking from a faucet

could be described in liters per hr (L/hr) - Other rates?

Speed

- Rate of change of distance with respect to time

(how fast an object is moving) - speed distance
- Units of m/s, ft/s, mph, km/hr, km/s, etc.
- Ex. 55 mi/hr 23 m/s

time

Velocity

- Rate of change of position with respect to time

(speed with direction) - Velocity displacement
- Units of m/s, ft/s, mph, km/hr, km/s, etc.
- Ex. - 55 mi/hr 23 m/s _at_23o

time

Speed vs. Velocity

- Similarities
- Both measure rate at which an object moves
- Same units
- Differences
- Velocity has direction, speed doesnt
- Velocity may be negative
- Means its moving in the negative direction

Speed vs. Velocity

- Ok, now you know the difference between speed

velocity. - When were math problems or graph problems in

here, we usually wont worry about the

difference. Youll get into that more in

physics. - Well use the variable V for both.

Constant

- Constant staying the same (remember constant

variables?) - Constant speed speed stays the same
- Most things dont move with a constant speed.
- Constant velocity velocity stays the same
- Means both speed AND _______________ stay the

same - Most things dont move with a constant velocity.

- If something is moving with a constant velocity

of 5.0 mi/hr, what does that mean? - How far will it travel in 1 hr? 2 hr? 5 hr?

- If something is traveling with a constant

velocity of 20.0 m/s, what does that mean? - How far will it travel in 1.0 s? 2.0 s? 7.0 s?
- What equation did you use for the above?

Do the cow questions in your notes.

- A cow runs 25 m in 5.0 seconds. What is the

cows average velocity? (show your work) - The cow then runs the opposite direction with the

same speed. Average velocity?

Speed

- If you are traveling 80 mi/hr, how long does it

take you to go 80 miles? - Chelseas answer

Instantaneous Speed/Velocity

- Speed or velocity at an extremely short time

interval - (speed or velocity at an instant in time)
- Speedometer
- Radar gun

Bell Work 10/23/14 3 min

- Put your homework upsidedown on your desk.
- What are two ways distance and displacement are

different? - Identify which color path gives distance and

which color path gives displacement. - True or False Displacement is always greater

than or equal to distance. - A

A

B

x, t, V, or a?

- 5.0 mi
- 30.5 m/s
- 89 min
- 45 m/s/s
- - 15 mph
- 6.02 in
- 25 m/s2
- 4 hours
- 3 laps
- 10 mi/hr/s

- V ? X 50.0 m t 2.0 s

- V ? x 200.0 m t 2.0 s
- V 50.0 ft/s x 100 m t ? s
- V 2.0 m/s x ? m ? ft t 40.0 min

- V 10.0 m/s X 50.0 m t ?

- V 20.0 m/s X ? t 1.5 min

Solving speed velocity problems

- Identify the variables
- Units help! Include them!!
- Convert units if necessary
- Write the equation
- Plug into the equation solve
- Include units correct of sig figs in your

answerconvert units if necessary

- Monica Burns is running with a velocity of 12.0

m/s. How long will it take her to cover the

length of a basketball court (28.7 m)?

- Blaze throws a 50.0 mph fastball. How many feet

will the ball go in 2.0 s?

- Kevin can run around the track 6 times in 10.0

minutes. If the track is 0.25 miles around, what

is his average speed?

Bell Work 10/24/14

- Put your homework upsidedown on the desk to be

checked. - David throws a 65.0 mph fastball. How many feet

will the ball go in 2.0 s?

Bell Work 10/27/14

- Monica Burns is running with a velocity of 39.4

ft/s. How long will it take her to cover the

length of a basketball court (28.7 m)? - W5SAYWoS

Relative Velocity

- How fast are you going right now?
- http//www.youtube.com/watch?vwIzvfki5ozU
- Also deals with acceleration
- But its perhaps over your heads
- Monty Python Song
- http//www.youtube.com/watch?vvIy76M-4txo
- A little more approachable, and culturally

significant! - 1 light year distance light can travel in one

years time. (9,461,000,000,000 km or

5,878,000,000,000 mi) - 6 trillion miles! (1 sig fig)
- could also add cool solar system movement into

this slide or near here! Maybe thatd be more

relevant to acceleration though.

Relative Velocity

- Velocity changes depending on your frame of

reference. Everything everywhere is moving

relative to something. A frame of reference is

what you consider to be standing still.

Calculating relative velocity

- Choose one direction to be positive. The other

is negative. Add the velocities.

Relative Velocity

- A bus is traveling at 35 mi/hr. Amber throws an

apple at the bus driver with a velocity of 25

mi/hr toward the front of the bus. What is the

apples velocity relative to the bus driver?

Relative Velocity

- A bus is traveling at 35 mi/hr. Amber sees Jason

standing alongside the road. She leans out the

window and throws an apple at him with a velocity

of 25 mi/hr toward the front of the bus. What is

the apples velocity relative to the Jason?

Relative Velocity

- Cameron is racing Vittoria. He is behind, but

driving at 25 mi/hr west. Vittoria is driving at

23 mi/hr west. What is Camerons velocity

relative to Vittoria?

Relative Velocity

- Mythbusters soccer ball!

Optical Illusion

- Stare long enough and youll see a giraffe!

Relative Velocity

- Kennedy realizes the railroad man is going to

catch her, and shes stolen some loot from a

jewelry store. Still running at 10.0 mph west,

she throws the loot with a velocity of 50.0 mph

relative to her. How fast is the loot moving

relative to the ground?

Bell Work 10/29/14

- Use the factor label method to convert 1 m/s to

mi/hr. - What does 2.0 m/s mean?
- Morgan is riding on a boat traveling at 15 mph

north. If she runs south at 7.0 m/s, how fast is

she going relative to the water?

Bell Work 10/29/14

- Use the factor label method to convert 1 m/s to

mi/hr. - 2.2 mph
- What does 2.0 m/s mean?
- Travels 2.0 meters each second
- Morgan is riding on a boat traveling at 15 mph

north. If she runs south at 7.0 m/s, how fast is

she going relative to the water? - 15 -7.0 8 8 m/s north

Bell Work 2/13/12 4 minutes

- Put your hw on your upsidedown on the top of your

desk. - Andy is being chased by a Valentines Day

stalker. He runs with a velocity of 7.0 m/s for

35 s. Then he suddenly gets tired and slows down

to 2.0 m/s for 40.0 s. How far did Andy run? - What is the formula for the slope of a line?

Bell Work 2/14/12 4 minutes

- n T PV
- R
- In the above equation, which variables are

directly related and which are inversely related? - Draw an inverted stick figure.
- It takes Cameron 3000 seconds to travel 500

meters. How long would it take him to travel 100

m at the same speed?

Bell Work 11/10/14 4 minutes

- Blaze throws a 50.0 mph fastball. How many feet

will the ball go in 2.0 s? - It takes Cameron 3000.0 seconds to travel 500.0

meters. How fast did he run? - Give 2 differences between displacement and

distance. - Can an object accelerate without changing speed?

- Find the position and velocity at
- 2.0 s 2) 5.0 s 3) 7.0 s
- 4) 12.5 s 5) 15 s 6) 15.5 s

Bell Work 3/8/12

- Find the slope of the line that point A is on.
- Find the slope of the line segment point D is on.

c

b

d

f

e

a

g

h

Bell Work 3/9/14

- Find the slope of the line that point E is on.
- Find the slope of the line segment point F is on.
- Find the slope of the line segment point G is on.

Bell Work 3/14/14 5 minutes

- Find the displacement velocity at A, B, C, D,

E, F

2.0

Displacement (m)

1.0

0.4

Bell Work 10/29/14

- Use the factor label method to convert 1 m/s to

mi/hr. - What does 2.0 m/s mean?
- Morgan is riding on a boat traveling at 15 mph

north. If she runs south at 7.0 m/s, how fast is

she going relative to the water?

Bell Work 10/29/14

- Use the factor label method to convert 1 m/s to

mi/hr. - What does 2.0 m/s mean?
- Morgan is riding on a boat traveling at 15 mph

north. If she runs south at 7.0 m/s, how fast is

she going relative to the water?

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Bell Work 10/30/14 6 min

- Find the displacement (position) and velocity of

the object in the graph - a. 0.5 s
- b. 2.0 s
- c. 2.5 s
- d. 4.0 s
- e. 5.0 s

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- Today you are going topractice finding the slope

of a line reading distance/position/displacement

vs. time graphs - So you candevelop an understanding of how graphs

describe motion learn to interpret them. - Youll know youve got it when you can
- Find the displacement and velocity of an object

using a position vs. time graph.

Motion Graphs

- Very useful in analyzing how the motion of an

object changes.

Getting info from motion graphs

- 3 ways to get information
- Read graph
- Find slope
- Find area under graph
- Look at labels of the axes!
- Let units be your guide!!!
- STUDENTS DONT UNDERSTAND THAT VX/T IS THE SAME

AS THE GRAPH!?

Position (Displacement) vs. Time Graph

- Read X-axis to find the position (displacement )
- Find slope for velocity
- Faster objects steeper (or greater) slopes
- Object not moving zero slope (flat, horizontal

line) - Area under graph means NOTHING!

- Where is the object at 2.0 s?
- Where is the object at 2.5 s?
- Where is the object at 4.0 s?
- Where is the object at 5.8 s?

Finding Velocity from D vs. T Graph

- To find the velocity of the object, calculate the

slope of the line segment you want to know about. - For example Find the velocity of the person for

the first 5 seconds of their trip. - Pick 2 points that are on the line segment.

Usually, the endpoints work well. - Calculate the slope. Be sure to include units.
- (0, 0) and (5, 10) are the end points.

Finding Slope

- Slope rise

run

- Find the objects velocity at
- 0.5 s
- 2.0 s
- 2.5 s
- 5.8 s

- Story?

What is the average speed of car A for the entire

trip?

Position (displacement) vs. time graph Each

point on the line tells you where the object is

at each instant.

- A straight line shows constant velocity.
- Slope of the line gives the magnitude (amount) of

velocity.

At Rest

Velocity

- Velocity

A curved line shows acceleration.

Concave-Up Concave-Down Looks like a

SMILE! Looks like a FROWN!

- slowing down speeding up slowing

down speeding up - positive acc.

negative acc.

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Creating Graphs

- Title at Top (y axis vs. x axis)
- Lines and scales neatly drawn/written
- Key (if applicable)
- Axes labeled, including units
- Axes scaled frequently marked
- Scale is consistent and easy to interpret using

lines on graph paper - graph is made large enough to read origin begins

at 0,0 if appropriate

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Time (s) Displacement (m) Velocity (m/s)

0 5

5 10

10 20

15 20

20 15

25 10

30 0

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- Position vs. Time Graph Lab
- Show all work for problems involving math.
- Round to 3 sig figs
- Precise numbers can be checked by clicking the

mouse on the graph - http//users.hal-pc.org/clement/Simulations/Physl

ets/TST/Position-Time20Graphs.html

Check out these applets

- http//jersey.uoregon.edu/vlab/block/Block.html
- http//dev.physicslab.org/Document.aspx?doctype3

filenameKinematics_PositionTimeGraphs.xml

Airplane Lab

- Today
- Make plane
- Make graphs
- Start timing!
- Tomorrow
- Questions?
- Monday
- Due at beginning of class

Objectives

- Identify direct inverse relationships
- Paper airplane lab

Direct Inverse Relationships

- Direct relationship
- Directly across one another in equation
- When on opposite sides of the sign, both are

on top or both on bottom - If one doubles, the other doubles!
- Inverse relationship
- When on opposite sides of the sign, ones on

top the others on the bottom - If you double one, the other is halved

Directly or Inversely Related?

Bell Work 2/25/13 5 minutes

- A cheetah can run 200.0 m in 6.6 s. Calculate

the cheetah's velocity. - A calf runs at 8.0 m/s. How long would it take

to run the length of a football field (360 ft)?

1 m 3.28 ft - Identify if the velocity is positive, negative,

or zero on the graph below. Find the velocity

from 3.00 8.00 s.

Displacement (m)

Bell Work 2/26/13 5 minutes

- A calf walks at 2.0 meters 4.0 in seconds. Find

the velocity. - A boy walks 1.5 m in the negative direction in

5.0 s. Calculate the boys velocity. - Find the displacement and velocity for each

point.

2.0

Displacement (m)

1.0

0.4

c

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24

20

16

Displacement (m)

12

Bell Work 5/23/12 5 min

- Take homework out.
- Find position and velocity at each point.

Bell Work 5/23/12 5 min

- Take homework out.
- Find position and velocity at each point.

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Homework (review)

C

D

B

E

A

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- Today you are going toread about distance,

displacement, speed, velocity, completing an

accompanying notes sheet, and review it. - So you candevelop an understanding of how to

describe motion and solve motion problems. - Youll know youve got it when you can
- Accurately complete the notes sheet questions
- Define differentiate between distance and

displacement - Define differentiate between speed and velocity

Bell Work 2/15/13 7 min

- 15 mL of a liquid has a mass of 30.0 g. What is

its density? - What is the formula for velocity?
- Brendon falls down 8.0 meters of bleachers in

3.00 seconds. What is his velocity? - Express his speed in feet per second (1 m 3.28

ft).

Bell Work 3/21/13 3 min

- Solve the acceleration equation for Vo.
- Solve the acceleration equation for t.
- Solve the acceleration equation for x by using

Vf xt.

Bell Work 2/28/13 7 min

- Use the factor label method to convert the

following. - 15.0 m ? ft (1 yd 0.914 m, 1 yard 3 ft)
- Put the graphs below in order from fastest moving

to slowest.

- Shania is walking when she decides to sprint down

the hallway. Starting at 3.00 mi/hr, she reaches

a speed of 12.0 mi/hr in 2.0 seconds. Calculate

her acceleration.

Bell Work

- What angle should you launch something to get it

to go the furthest? - The highest?
- What 2 angles would go the same distance?

Bell Work

- What angle should you launch something to get it

to go the furthest? - The highest?
- What 2 angles would go the same distance?

Schedule

- Friday
- Catapult info
- Work on airplane labs
- Monday
- Turn in Airplane Labs
- Projectile Notes
- Acceleration
- Tuesday
- Acceleration
- Wednesday
- Acceleration Graphs
- Take home quiz
- Wednesday
- Turn in take home quiz
- Acceleration Graphs
- Intro car activity
- Thursday
- Car activity!

- Today you are going totake notes on and complete

a worksheet on acceleration. - So you candevelop an understanding of

acceleration and solve acceleration problems. - Youll know youve got it when you can
- Accurately complete the problems questions

Bell Work 3/25/14 4 min

- Define acceleration.
- An object is traveling at 45.0 m/s. What does

that really mean? - An object is accelerating at 10.0 m/s/s. what

does that really mean?

Bell Work

- Complete 1-9 on the worksheet!!! Woo woo!!!

Acceleration

- the rate of change in the velocity of an object
- 3 ways an object could accelerate?
- What 3 controls can cause a car to accelerate?
- All accelerations are caused by forces!
- Examples of acceleration?

What does acceleration really mean?

- A car is accelerating at 5.0 mi/hr/s.

Formula for Final Velocity

- Cheyenne is riding her bike at 2.0 mi/hr. If she

accelerates at 5.0 mi/hr/s for 4.0 s, how fast

is she going?

Negative acceleration

- Negative displacement
- Means moved in the negative direction
- Negative velocity
- Means object is traveling in the negative

direction - Negative acceleration
- Means object is accelerating in the negative

direction - acceleration velocity are in opposite

directions, the object is slowing down

Acceleration

- Can an object be accelerating, yet be slowing

down?

What does acceleration really mean?

- A ball is accelerating at -9.81 m/s2

Formula for acceleration

- Cheyenne is riding her bike at 2.0 mi/hr. If she

accelerates at 5.0 mi/hr/s for 4.0 s, whats her

acceleration?

Formula for acceleration solved for Vf (and

everything else) Only a Vf formulas provided on

test!

- Make equation with x and y in it solve

Order of Operations!

- Make sure you put stuff in your calculator in the

correct order!

Practice Problems

- Vo 8.0 m/s Vf 20.0 m/s t 6.0 s a ? m/s2

Practice Problems

- Vo 5.0 m/s Vf ? m/s t 6.0 s a 3.0 m/s2

Practice Problems

- Vo ? Vf 42.0 mi/hr t 2.50 s a 4.00

mi/hr/s

Practice Problems

- Vo 15.0 mi/hr Vf 60.0 mi/hr t ? a

4.0 mi/hr/s

Practice Problems

- Vo 30.0 m/s Vf ? t 5.00 s a -9.81 m/s2

Bell Work do in notes!

- Nick throws a ball into the air with a velocity

of 30 m/s upwards. Gravity causes the ball to

accelerate 10 m/s2 downwards. How fast is the

ball going 2.5 s after he threw it? - What is the velocity 3 seconds after he threw it?
- What is the velocity 5 seconds after the threw

it? - What is the velocity 10 seconds after the threw

it?

- Today you are going totake notes on and complete

a worksheet on acceleration. - So you candevelop an understanding of

acceleration and solve acceleration problems. - Youll know youve got it when you can
- Accurately complete the problems questions

Velocity (v) vs. Time (t) Graph

- Slope ?
- Any straight line ? ?
- Line curving up or down ? ?
- To find velocity ?
- Area under curve ?

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Bell Work 4/2/13 6 min

- Find the v and a of the object in the graph
- a.
- b.
- c.
- d.
- e.
- 2. W5SAYBoS

Velocity (m/s)

Bell Work 3/1/13 7 min

- Use the factor label method to convert the

following. - Brittany is walking when she decides to sprint

down the hallway. Starting at 3.00 mi/hr, she

reaches a speed of 12.0 mi/hr in 2.0 seconds.

Calculate her acceleration. - 9.81 m/s2 ? ft/s2 (1 yd 0.914 m, 1 yard 3

ft)

- Today you are going totake notes on velocity

graphs and complete a velocity graph worksheet. - So you canfind the velocity and acceleration of

an object using a velocity graph. - Youll know youve got it when you can
- Accurately complete the velocity graph worksheet.

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Velocity (v) vs. Time (t) Graph

- To find velocity, just read the graph!
- Slope acceleration
- slope, acceleration,
- 0 slope, 0 acceleration, (_________ speed)
- - slope, - acceleration
- Any straight line ? constant acceleration
- Line curving up or down ? acceleration is

changing - Area under curve displacement

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Bell Work 3/31/14

- Take your velocity graph worksheets out
- What is happening in each segment of this

Velocity vs time graph? - W5SAYWoS

Velocity Graph WKST 1

Car Acceleration Web Activity

- Renault Clio 3.0 V6 255 - 2001 0 to 60 mph

time - 5.8 s

Car Acceleration Web Activity

Velocity (m/s)

Time (s)

Velocity vs. Time Graph

- Find the velocity of the object in the graph
- a.
- b.
- c.

Bell Work 3/1/12 6 min

- Find the v a of the object in the graph at

points

B

C

D

A

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Bell Work 3/2/11 6 min

- Find the v and a of the object in the graph
- a.
- b.
- c.
- d.
- e.

Velocity (m/s)

Bell Work 2/24/12 6 minutes

- Do this bell work on a separate sheet of paper.

It will be collected graded when the timer

sounds. - It takes Cam 6.5 minutes to run 1.0 mile. What

is his velocity? - Two days ago Courtney was walking the halls after

school, minding her own business. She heard a

roaring behind her, and turned to see Disha

driving a car down the hall. Courtney had been

walking at a speed of 4.0 ft/s. She quickly

accelerated at a rate of 8.0 ft/s2 for 1.5 s.

What was Courtneys final velocity? (identify

all variables, write the equation, circle your

answer include units.

Bell Work 3/5/12 5 minutes

- It takes Cam 6.5 minutes to run 1.0 mile. What

is his velocity? - Sarah goes from a speed of 1.5 m/s to a speed of

6.0 m/s in 3.0 s. What is her acceleration?

Graded Bellringer 11/7/14

- From rest, a cow can reach a velocity of 15 m/s

in 3.0 s. What is the cows acceleration? - Kylie throws a water balloon downwards out of the

window. The balloon accelerates at 9.81 m/s2.

After 5.00 seconds, the balloon is traveling at

68.67 m/s. What was the initial velocity of the

balloon? - Emily is driving a car at 12.0 mi/hr. If she

accelerates at 8.50 mi/hr/s, how many seconds

will it take her to reach 65.5 mi/hr?

To study

- 2.1 Measuring Motion Reading Guide
- Displacement Graph Wkst 2
- Velocity problems 1a
- Acceleration wkst 1

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Bell Work 2/27/12 7 minutes

- Starting from rest, Luke rolls down a hill. If he

has a speed of 18.0 m/s after 4.0 seconds, what

is his acceleration? - Jamie is driving a go-cart. She is going 5.00

m/s when she decides to pass Marc. She

accelerates at 5.200 m/s2 for 2.000 s,

successfully leaving Mark in the dust. What was

Jamies final velocity? - W5SAYW

Schedule

- Wednesday
- Quiz on velocity
- Thursday
- Return quiz
- Finish Paper Airplane Lab
- Friday
- Airplane Lab Questions?
- Catapults
- Monday
- Acceleration
- Tuesday
- Acceleration
- Take home quiz
- Wednesday
- Acceleration Graphs

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Bell Work 2/9/11 5 min

- Solve for t.
- 280
- 2. It takes Stu, a slimy slug, 20 minutes to

travel from his favorite bush to the local trash

can (a trip of 30 meters). If he traveled at the

same speed, how far would he travel in 60 minutes?

20 t

Bell Work 2/10/11 6 min

- Solve for z.
- 20
- It takes Emily A. 2 minutes to travel from

history to lunch (a trip of 200 meters). If she

traveled at the same speed, how far would she

travel in 30 minutes? - Draw an inverted stick figure.

10 z

Bell Work 2/11/11 6 min

- Solve for G. Show all 3 steps.
- 80
- 2. It takes Alec 3000 seconds to travel from the

cafeteria to Physical Science(a trip of 500

meters). What was his average velocity? - If he traveled at the same speed, how far would

he go in 10 seconds?

240 G

Bell Work 2/14/11 6 min

- Get your homework out. Dont copy!
- Make sure you clearly date your bell work!
- If an object is traveling at 1600 m/s, how long

will it take it to travel 2000 meters? - W5SAYW
- G Finish Test!

Schedule

- Students will be taking yesterdays quiz if they

havent already - Others will be working on their final study

guides. If you have questions, ask!

Bell Work 2/16/11 6 min

- Starting from rest (Vo 0), a cow accelerates to

17 mi/hr in 8 seconds. What is her acceleration? - Find the velocity of the object in the graph
- a. 6 - 7 s
- b. 7 - 12 s
- c. 12 - 12.5 s

Bell Work 2/17/11 6 min

- A cow is running at 17 mi/hr when she suddenly

hits a swamp. If it takes her 4 seconds to be

halted by the muck, what was her acceleration? - Find the velocity of the object in the graph
- a. 6 - 7 s
- b. 7 - 12 s
- c. 12 - 12.5 s

Bell Work 4/3/13 6 min

- Tuesday 4/2
- Review velocity worksheet a couple graphs
- Complete study guide
- Wednesday
- Review study guide
- Thursday
- Test on 10.1 10.2 Velocity Acceleration

(includes 2 graphs) - Study
- 10.1 questions
- Acceleration Worksheet 1
- study guide (all other ch. 10 worksheets may be

helpful) - Friday
- Begin 10.3 Forces Motion

- Today you are going toreview the study guide

other information on tomorrows test. - So you canknow exactly what to study for

tomorrows test. - Youll know youve got it when you can
- Accurately answer all questions on the

worksheets.

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Displacement (m)

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Bell Work 2/21/11 6 min

- Find the velocity
- of the object in
- the graph
- a. 0 - 5 s
- b. 5 - 9 s
- 2. Find the
- acceleration of the
- object in the graph
- From 0 5 s
- 3. W5SAYW

Velocity (m/s)

Time (s)

Bell Work 5/23/12 4 min

- Will be collected!
- Find the v a
- of the object in
- the graph at
- points A, B, C.

- Objectives
- Review x vs. t v vs. t graphs
- Review kinematic problems
- Begin reviewing forces, friction, air

resistance - Schedule
- BW Check HW
- Review schedule
- Review HW
- Start Study Guide II
- Return Tests

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- Vinny is driving a go cart with a constant speed

of 35.0 m/s. How far will he travel in 40

seconds?

- It takes Megan 22.0 seconds to run 50.0 meters.

What was her average velocity?

- B-Shell fires an arrow at 300 feet per second.

How many feet did it travel after 0.25 seconds?

- Starting from rest, Peterson reaches a speed of

25 m/s in 4 seconds. What was her acceleration?

- Carl throws a rock with a velocity of 20 m/s.

How many seconds will it take to travel 40

meters?

- Alex runs down a hill. If he has an acceleration

of 6 m/s2 and his initial velocity was 2 m/s,

what is his velocity after 2 seconds?

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Bell Work 2/23/11 6 min

- Find the velocity
- of the object in
- the graph at
- a. 10 s
- b. 20 s
- 2. Find the
- acceleration of the
- object in the graph
- a. from 10 20 s
- b. from 30 40 s
- c. from 50-60 s

Bell Work 3/2/11 5 minutes

- Natalie and Qinzhi are doing the marble lab.

Natalie releases the marble. Qinzhi starts the

timer when the marble hits the starting mark and

stops the timer when the marble hits the 40 cm

mark. The timer reads 0.85 s. If the starting

mark was 15 cm in before the zero mark, what was

the average velocity of the marble?

Bell Work 3/4/11 5 minutes

- Kevin and B-Shell are doing the marble lab. Kevin

releases the marble. B-Shell starts the timer

when the marble hits the starting mark and stops

the timer when the marble hits the 60 cm mark.

The timer reads 0.92 s. If the starting mark was

5 cm in before the zero mark, what was the

average velocity of the marble?

Marble Lab

- Make careful measurements!
- Stay focused on completing the lab. Only

interact with your lab partner.

Marble Lab 50 Points!!

- Due by the end of class tomorrow.
- Tape ramp to wall.
- Dont make it too steep!
- Make the part that you measured straight.
- Tape the end up so the marble doesnt fall off.
- Time trials.

Marble Lab

- Create 2 graphs
- Distance vs. Time (use average time)
- Velocity vs. Time (use average time)
- Plot both trials on each graphuse 2 different

colored to differentiate - You must have a key!

Creating Graphs

- Title at Top (y axis vs. x axis)
- Lines and scales neatly drawn/written
- Key (if applicable)
- Axes labeled, including units
- Axes scaled frequently marked
- Scale is consistent and easy to interpret using

lines on graph paper - graph is made large enough to read origin begins

at 0,0 if appropriate

Bell Work 1/25/11 5 min

- Calculate the speed of an object that covers 40

feet in 3 seconds. - Calculate the distance an object covers if it has

a speed of 55 km/hr and it travels for 7 hours. - Calculate the time it takes for an object with a

speed of 20 m/s g to travel 130 m.

Bell Work 1/27/11 5 min

- What is the difference between speed and

velocity? - Give a situation where an objects speed change

while velocity remains the same. - Dillon is sledding down the hill one fine day.

If it takes him 15 seconds to sled 63 meters,

what was his average speed? - One mile per hour is equal to 2.2 m/s. How fast

was Dillon traveling in miles per hour? (Use

dimensional analysis.)

Bell Work 1/28/11 5 min

- A. The slope of a line is __ over __. What is

the equation for the slope of a displacement (x)

vs. time (t) graph? (same as equation for __) - Draw a separate displacement vs. time graph for

each of the following objects - An object with constant, positive velocity
- A slower object with constant, positive velocity
- An object with zero velocity
- An object with negative velocity
- A faster object with negative velocity

Bell Work 2/18/11 2 minutes

- What is the equation for slope?
- What is the average velocity of the object in the

graph below?

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