Question

the boy running along a circular track of radius 7m . he completes one circle in 10 seconds . the average velocity of the boy is

Answer 1

Answer:

4.4

Explanation:

v = 2 πr/t

v = 2*3.14*7/10 ( we r multiplying 7 and 2)

v = 14*3.14/10

v =4.4

Answer 2

The average velocity of the boy is 0 m/s.

Given,

The radius of the circular track = 7 m.

Time taken by the boy to complete one circle is 10 seconds.

To Find,

The average velocity of the boy.

Solution,

The formula for calculating the average velocity of a body is

Average velocity = Total displacement/Total time taken

In this question

Total displacement = 0 m { as the boy completed one round of the circular track so the starting point and the ending point become the same.}

Total time taken = 10 seconds.

Now,

Average velocity = 0/10 = 0

Hence, the average velocity of the boy is 0 m/s.

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