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Physics Jeopardy

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Physics Jeopardy Work & Power Simple Machines energy Energy Extra credit on quiz questions Q $100 Q $100 Q $100 Q $100 Q $100 Q $200 Q $200 Q $200 Q $200 Q $200 – PowerPoint PPT presentation

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Title: Physics Jeopardy


1
Physics Jeopardy
Work Power
Simple Machines
energy
Energy
Extra credit on quiz questions
Q 100
Q 100
Q 100
Q 100
Q 100
Q 200
Q 200
Q 200
Q 200
Q 200
Q 300
Q 300
Q 300
Q 300
Q 300
Q 400
Q 400
Q 400
Q 400
Q 400
Q 500
Q 500
Q 500
Q 500
Q 500
Final Jeopardy
2
100 Work Power
  • How many joules of work are done on an object
    when a force of 10N pushes it 5m?

3
100 Answer Work Power
  • 50 J

4
200 Work Power
  • How much work is done on a 50 N rock that you
    carry horizontally across a 10 m room?

5
200 Answer Work Power
  • Zero Joules of Work

6
300 Work Power
  • How much power is expended if you lift a 50 N
    rock 10 m in 2 second?

7
300 Answer Work Power
  • 250 Watts

8
400 Work Power
  • Marissa is jogging up a winding trail on a
    mountain that has a height of 200 m. When she
    finally gets to the top a sign tells her that the
    trail has a distance of 800 m. If she has a mass
    of 48 Kg, how much Work has she done?

9
400 Answer Work Power
  • 96000 Joules

10
500 Work Power
Sam, who has a mass of 70Kg, races Jarvis, who
has a mass of 50Kg, up a hill with a height of
10m. If Sam gets up the hill in 5s and Jarvis
gets up the hill in 3.6s, who is more powerful?
11
500 Answer Work Power
  • Sams power was 1400 Watts and Jarviss power was
    also 1400Watts, so they had the same amount of
    power.

12
100 Question Simple Machines
  • The ratio of output force to input force of a
    simple machine is called the
  • gear ratio
  • fulcrum
  • efficiency
  • mechanical advantage.
  • pivot point

13
100 Answer Simple Machines
d) Mechanical advantage
14
200 Question Simple Machines
How much less work does Jack do when he pulls a
rope of a pulley down .7m and lifts a mass of
540N that is supported by 4 ropes?
15
200 Answer Simple Machines
The work on both sides are the same.
16
300 Question Simple Machines
If Erin can only push with a force of 8N, how far
out must she be from the fulcrum of the lever if
she is lifting a mass with a weight of 40N that
is 30cm from the fulcrum?
17
300 Answer Simple Machines
150cm
18
400 Question Simple Machines
You build a lever to help you lift a tank. The
tank weighs 4000 N, and you need to lift it 2
meters. You decide on a whim to analyze what you
have done after lifting the tank and realize that
you moved your end of the lever a whopping 20
meters, but had to apply a 500 N force. What did
you find out the efficiency of your lever was?
19
400 Answer Simple Machines
80 efficiency
20
500 Question Simple Machines
How high does a 300N weight get lifted if it is
supported by a system of 4 pulleys like the
system below, and Mark pulls the rope .5m?
Irvin
300N
21
500 Answer Simple Machines
.125m
22
100 Question Energy
  • Potential energy is the energy an object has
    because of its ______.
  • Speed
  • location
  • size
  • temperature
  • density

23
100 Answer Energy
  • B) Location

24
200 Question Energy
  • If an object has kinetic energy, then it also
    must have _______.
  • Impulse
  • momentum
  • acceleration
  • Force
  • None of the above

25
200 Answer Energy
b) momentum
26
300 Question Energy
A toy cart moves with a kinetic energy of 30J.
If its speed is doubled, what will its kinetic
energy be?
27
300 Answer Energy
  • 120J

28
400 Question Energy
If Barbora, with mass of 46Kg jumps off the
top of the high school, height 20m, how much
kinetic energy does she have when she has fallen
a quarter of the distance?
29
400 Answer Energy
  • 2300 J

30
500 Question Energy
A ball slides down the frictionless track shown
below. The ball has no velocity at position F.
G
E
F
C
A
B
a)      To what point does the ball rise on the
opposite incline? b)      At what point(s) in the
diagram is the speed at a maximum? c)      At
what point(s) is the kinetic energy at a
maximum? d)      At what point(s) is the speed
zero? e)      At what point(s) is the potential
energy at a minimum? f)      At what point(s) is
the potential energy at a maximum? g)      At
what point(s) is the momentum at a maximum?
31
500 Answer Energy
a) E b) B c) B d) F E e) B f) F E g) B
32
100 Question energy
If you stand on top of a building and figure out
that you have a PE of 4000 Joules, what would
your KE be right before you hit the ground?
33
100 Answer energy
KE 4000 J
34
200 Question energy
How much work does it take to lift a 400 N slab
of brick a height of 5 meters?
35
200 Answer energy
W 200 J
36
300 Question energy
How much kinetic energy do you have if you are
running at a speed of 5 m/s and have a mass of 65
kg?
37
300 Answer energy
KE 812.5 J
38
400 Question energy
What is your speed if you have a KE of 32000 J
and a mass of 70 kg?
39
400 Answer energy
v 30.2 m/s
40
500 Question energy
What is your KE half way down a hill if the hill
has a height of 25 m and you have a mass of 55 kg?
41
500 Answer energy
KE 6875 J
42
100 Question Other
LOL
43
100 Answer Other
LOL
44
200 Question Other
LOL
45
200 Answer Other
LOL
46
300 Question Other
LOL
47
300 Answer Other
LOL
48
400 Question Other
LOL
49
400 Answer Other
LOL
50
500 Question Other
Just sad.
51
500 Answer Other
LOL
52
Final Jeopardy
Why will a looped coil attached to a DC power
supply not work as a good motor?
53
Final Jeopardy Answer
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