Newton's Three Laws of Motion by david

NEWTON'S FIRST LAW

honeyclusters — 2015-11-18 12:57:49 UTC

~Definition~

An object at rest will stay at rest and an object in motion will stay in motion unless acted upon by an opposing force.

~Key Terms~

Inertia: The tendency of an object to resist a change in motion.

Friction: The resistance that one surface or object encounters when moving over another.

~Questions~

1:Newton's first law is also called...?

2:What does it take to move a "still" object?

Example of First Law

honeyclusters — 2015-11-18 13:08:28 UTC

The man was not wearing a seat-belt, so when he crashed, the sudden stop forced himself through the windshield. Since an object has a tendency to resist a change in motion, this carried him forward after the truck has suddenly stopped.

NEWTON'S SECOND LAW

honeyclusters — 2015-11-18 13:16:48 UTC

~Definition~

The net force of an object is equal to its mass times acceleration.

~Key Terms~

Net Force: The overall force acting on an object.

Newton: The unit of force.

~Questions~

1: What is the formula for Force?

2: Units of force are measured using...?

Example of Second Law

honeyclusters — 2015-11-19 12:59:59 UTC

The heavier truck requires more force to move than the smaller car which only requires a small amount of force to move.

honeyclusters — 2015-11-19 13:02:23 UTC

NEWTON'S THIRD LAW

honeyclusters — 2015-11-19 13:03:19 UTC

~Definition~

For every action there is an equal and opposite reaction.

~Key Terms~

Action Force: The force acting in one direction.

Reaction Force: The force acting in the opposite direction.

~Questions~

1: If action/reaction forces are equal, do they cancel each other out?

2:What two forces are the result of Newton's Third Law?

Example of Third Law

honeyclusters — 2015-11-19 13:07:45 UTC

The skateboarder is pushing with his foot off the ground, which is the action force, causing the reaction force to be the skateboard propelling forward.