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ch 4 physics
CHAPTER 4 PHYSICS VOCAB
Question | Answer |
---|---|
relative | regarded in relation to something else. Depends on point of view, or frame of reference. |
speed | how fast something is moving; the path distance divided by time interval. |
instantaneous speed | speed at any instant of time |
average speed | path distance divided by time intervals |
velocity | speed together with the direction of motion |
acceleration | the rate at which velocity is changing. the change may be in magnitude direction or both. |
free fall | motion under the influence of gravitational force only |
elapsed time | the time that has passed since the beginning of the event. |