Force and Motion - PowerPoint PPT Presentation

PPT – Force and Motion PowerPoint presentation | free to download - id: 314eb-MDc5Y

The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
Title:

Force and Motion

Description:

Aristotle: Greek philosopher who described motion of objects but performed no experiments ... Skateboarding down a hill causes positive acceleration. ... – PowerPoint PPT presentation

Number of Views:102
Avg rating:3.0/5.0
Slides: 10
Provided by: LPS
Category:
Tags:
Transcript and Presenter's Notes

Title: Force and Motion

1
Force and Motion
• Integrated Science 1

2
A Little History . . .
• Aristotle Greek philosopher who described
motion of objects but performed no experiments
• Galileo Italian scientist who used
experimentation to disprove belief that heavy
objects fall faster than light objects at the
Leaning Tower of Pisa

3
Speed vs. Velocity
• Speed Distance / Time
• Velocity speed in a given direction

D S T
4
Newtons 1st Law of Motion
• An object in motion or at rest will stay as such
until acted upon by an outside force.
• This is also called inertia.

5
Newtons 2nd Law of Motion
• Force Mass x Acceleration
• ( F m a )

F M A
6
Friction is a Force
• Friction is a force that works opposite the
direction of movement.
• Ex Car tires have more friction on asphalt than

7
Mass is Not Weight
• Mass is the amount of matter in an object.
• Weight takes into account the pull of gravity on
that object.
• Ex A 114 kg man weighs 253 lbs. on Earth but
only 41 lbs. on the moon. (same mass but less
gravity)

8
Acceleration
• Acceleration change in speed or direction over
time
• Ex Slamming on the brakes causes negative
acceleration. Skateboarding down a hill causes
positive acceleration. Driving in a circle at
constant speed is also acceleration.

9
Newtons 3rd Law of Motion
• For every action there is an equal but opposite
reaction.