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F & M Test
Forces and Motion Test
| Term | Definition |
|---|---|
| inertia | the tendency of an object to stay at rest or in motion |
| momentum | a measure of how difficult it is to stop an object |
| velocity | speed in a particular direction |
| acceleration | the change in velocity divided by the time it takes for the change to occur (speeding up or slowing down) |
| centripetal force | any force that causes an object to move in a circular path - PULLS EARTH IN A CIRCULAR MOTION AROUND THE SUN |
| weight | a measure of the pull of gravity on an object |
| friction | the force that opposes the motion of an object |
| gravity | the force of attraction between all objects in the universe |
| Newton's 1st Law of motion | an object at rest stays at rest or an object in motion stays in motion unless an unbalanced force acts upon it. |
| Newton's 2nd Law of motion | an object acted upon by a force will accelerate in the direction of the force - Force = Mass x Acceleration |
| Newton's 3rd Law of motion | for every action force there is an equal and opposite reaction force |
| Deceleration | negative acceleration |