| A | B |
|---|
| position | an object's place or location |
| speed | measure of distance an object moves in a given amount of time such as miles per hour |
| velocity | speed in a particular direction |
| acceleration | when a object starts, stops speeds up, slows down. also known as a change of velocity or turns |
| momentum | measure of how hard it is to slow down or stop an object. When a car stops you keep on moving a little bit |
| inertia | an object keeps moving in a straight line or stays at rest |
| First law of motion | an object will remain at rest or stay in motion until a force changes it |
| Second law of motion | An object's acceleration depends on the size and direction of the force and the mass of the object |
| Conservation of momentum | When an object hits a second object, the first one stops and the second moves away at the same speed as the first objectf at the the same speed as the |
| orbit | the path one body in space takes as it revolvesround another body |
| law of universal gravitation | all objects in the universe are attracted to all other objects |
