7. Which of the following best describes speed?
A. distance with a direction
B. change in velocity or speed over time
C. the distance an object moves in an amount of time
D. the displacement of an object in an amount of time
A. distance with a direction
B. change in velocity or speed over time
C. the distance an object moves in an amount of time
D. the displacement of an object in an amount of time
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Answer:
C.the distance an object moves in an amount of time
Speed is a scalar quantity that refers to "how fast an object is moving." Speed can be thought of as the rate at which an object covers distance. A fast-moving object has a high speed and covers a relatively large distance in a short amount of time.An object with no movement at all has a zero speed.
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