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Force and Motion-1
Force and Motion (Part 1 of 2)
Term | Definition |
---|---|
WORK | When force moves an object OVER a distance |
FORCE | Push/pull exerted on an object Sets object in motion or slows down i.e., “Hitting” a baseball |
SPEED | How fast an object is moving i.e., 65 mph |
ACCELERATION | CHANGES in object’s speed and/or direction Keyword: “Increase” |
GRAVITY | Force of attraction PULL things toward each other Larger mass; stronger force |
DISTANCE | TOTAL amount of ground Covered by object in motion |
MOMENTUM | Mass (weight) of any object Multiplied by its speed or velocity i.e., MASS x VELOCITY or MASS x SPEED |
DISPLACEMENT | Shortest distance between objects START and END position |
VELOCITY | Refers to BOTH speed and direction object moves i.e., 55 mph WEST |
FRICTION | Forces that resist or oppose motion of object in contact Types: •Air •Rolling •Sliding •Static |
MOTION | An y change in object’s position Over TIME Motion is measureable (Ending Point - Starting Point) |
UNIFORM MOTION | Object continues to move At SAME speed over long period i.e., Car on cruise control |