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What is BEST to say about a runner who is running at a constant velocity? A. Their acceleration is positive. B. Their acceleration is negative. C. Their acceleration is zero. D. Their acceleration cannot be determined.

Carlton Burgess

in Physics

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Annie Barnes on June 3, 2018

The question is to ask ourselves what is the BEST thing to say about a runner who is running at a constant speed? A constant speed (=velocity) means that they are not getting faster or slower that they are running exactly as fast all the time. This meanst that its speed does not change, so that its change in velocity is equal to 0. A change of speed is called acceleration so that its C. Its acceleration is zero. - C is the correct answer.


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