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| Question | Answer |
|---|---|
| acceleration | the act of accelerating; increase of speed or velocity. |
| average speed | the total distance traveled divided by the total time elapsed. |
| inertia | inertness, especially with regard to effort, motion, action, and the like; inactivity; sluggishness. |
| instantaneous | immediate, sudden, abrupt. |
| law of conservation of momentum | its a law |
| mass | a body of coherent matter, usually of indefinite shape and often of considerable size: a mass of dough. |
| momentum | force or speed of movement; impetus, as of a physical object or course of events: The car gained momentum going downhill. Her career lost momentum after two unsuccessful films. |
| speed | rapidity in moving, going, traveling, proceeding, or performing; swiftness; celerity: the speed of light; the speed of sound. |