Question

If an athlete take 8s to go once around a circular track of radius of 14. Then find the total distance covered by the athlete and magnitude of the velocity of the athlete.

Answer 1

Explanation:

formula to calculate velocity on a circular path is 2πr÷t

here

2πr is circumference as distance

t=8sec

π=22÷7

r=14 m

$v = \frac{2 \times 22 \times 14}{7 \times 8}$

$v = 11$

so distance is =2×22×14÷7

=88m