Question

a person complete a race in a circular ground of radius r in time t. his velocity is given by _________​

Answer 1

the body is in circular motion hence,

Because the velocity is fixed in magnitude at v = r ω, the velocity  also sweep out a circular path at angular rate ω

As dt tends to  0, the acceleration becomes perpendicular to v, which means it points toward the center of the orbit i.

Answer 2

Explanation:

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