Question

14)
If the athelete takes t seconds to go once around the circular path of radius
r, the velocity v is given by​

Answer 1

Answer:

Speed will be 2πr/t if athlete takes t seconds to go once around the circular path of radius R

Explanation:

Time taken for one complete  round =  t secs

Radius = R

Circumference of circle = 2πR

Distance covered  =  2πR

As he reaches at same point hence displacement = 0

Velocity = Displacement / Time    = 0/t  =  0  

None of the given option is correct

Speed = Distance / Time  

= 2πR/t

2πr/t