Question

A car moves on a circular path of radius 10metre .It completes 5 revolution in 5 minute. what is average speed​

Answer 1

Answer:

Radius = 10 m.

Number of revolutions = 5.

Time = 5 min = 5×60 seconds.

Angular speed = 2×pi ÷ Time = 2×3.14 ÷ 5×60 = 1/50 m/s

Average Speed = Angular Speed × Radius × Number of Revolutions = 50÷50 = 1 m/s

The average speed of the car is 1 m/s.