Question

If a cyclist takes one minute to complete half of the revolution on a circular path of 120 m radius, then the average velocity of the person is​

Answer 1

After half revolution, the cyclist will be on the opposite side of the diameter from the point where he started

So his displacement = diameter = 2×120m=240m

time taken is 1min=60s so average velocity v=

60

240m

=4m/s

So, the correct answer is '4m/s'.

Answer 2

Explanation:

400 400 metre per second find the diameter and divide it by 60 seconds convert diameter into cm