
A cyclist goes around a level, circular track at constant speed. Do you agree or disagree with the following statement? “Since the cyclist’s speed is constant, her acceleration is zero.” Explain.

Answer to Problem 1CQ
Explanation of Solution
Consider any object moving in a circle at a constant speed. The motion obtained by that object is called as uniform circular motion. To obtain such a motion, acceleration must be given in the direction of the center of the circle.
This kind of acceleration is called as centripetal acceleration, which acts towards the center.
Conclusion:
Thus, there is an existence of acceleration in the given case.
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