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## PowerPoint Slideshow about ' Unit Two: PHYSICS' - sunila

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Physics (Forces and Motion)Vocabulary

- Force: any push or pull on an object.

Unbalanced Force

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- Forces acting on an object are NOT EQUAL!

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- There IS a change in MOVEMENT!

http://media1.break.com/nt/uploads/fb/fb7619dce4c37ea730d5d62051d88cab.wmv

Newton’s Laws of Motion

- 1. Inertia of Rest & Inertia of Motion
- 2. Acceleration
- 3. Action-Reaction

Law 1: INERTIA OF REST

- An object at rest will stay at rest until acted upon by an UNBALANCED FORCE.

- Possible unbalanced forces: Tiger Woods, the wind

Law 1: INERTIA OF MOTION

- An object in motion will stay at the same speed, moving in the same direction unless an unbalanced force acts upon it.

- Possible unbalanced forces: water, gravity

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