Question

calculate the average velocity of a athlete moving along a circular track of radius 7 after one complete revolution​

Answer 1

Answer:

If you're traveling round at 2 revolutions per second then you are travelling with a frequency(f) of 2Hz.

Period (T)= 1/f

So T=1/2=0.5 seconds

You are travelling around a circle radius 0.3m so the circumference is 2πr

2π×0.3=0.6π m

You are travelling 2 times this distance in 1 second and as speed=distance/time

Speed=(2×0.6π)/1

=1.2π m/s

~3.77m/s