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3 August, 12:05

A biker going around a circular track at constant speed is accelerating. Why?

A. Direction is constantly changing

B. Gravity is pulling on it

C. The speed us changing

D. The earth is rotating

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Answers (1)
  1. 3 August, 12:30
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    For acceleration, there needs to be three factors that come into play. Either the change in velocity is increasing, decreasing, or it is changing direction. On a circular track, the direction is always changing. Which fits one of the three factors. So your answer would be A.
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