Question

 A cyclist moving on a circular track of radius 7m completes one revolution in 4 seconds. What is his average speed ? *​

Answer 1

Answer:

11m/s

Explanation:

2π7/4 is 11

for one complete revolution average velocity is zero but average speed will not be zero

Answer 2

Answer :

Radius of circular path = 7m

Time taken by cyclist to complete one revolution = 4s

We have to find average speed of cyclist$.$

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◈ Average speed is defined as the ratio of total distance travelled to the total time taken.

It is a scalar quantity having only magnitude.

SI unit : m/s

፨ Distance covered by cyclist after one revolution will be equal to the perimeter of circle.

➝ Vav = (2πr) / t

➝ Vav = (2×22/7×7) / 4

➝ Vav = 44/4

➝ Vav = 11m/s