Question

if an athlete takes t seconds to go once around a circular path of radius r, the velocity v is given by:​

Answer 1

Given:

An athlete takes t seconds to go around a circular path of radius r.

To find:

value of Velocity denoted by v.

Calculation:

Velocity is defined as the the total displacement divided by the total time taken to cover that specific displacement by that object.

$\boxed{ \rm{velocity = \dfrac{displacement}{time} }}$

In case of a full revolution in a circular path the displacement is zero because the athlete starts and stops at the same point.

$= > \rm{velocity = \dfrac{0}{time} }$

$= > \rm{velocity = \dfrac{0}{t} }$

$= > \rm{velocity = 0 \: m {s}^{ - 1} }$

So, final answer is:

$\boxed{\bf{velocity = 0 \: m {s}^{ - 1} }}$