Question

12 Shweta runs around a circular race track of radius 60 m with a constant speed of 12 m/s. Find her angular speed.​

Answer 1

Answer:

Velocity zero, speed 10 m/s

Explanation:

Radius of lap = 100m

Circumference =2πR=200π=628m

time taken to cover one lap = 62.8s  

Hence average speed =  

62.8

628

​

=10ms  

−1

 

Average velocity = 0 as the inital and final positions are same (after completing a lap) (displacement = 0)

Hence option B is correct.