How long will you chase?

A boy runs on a circular path of radius \( R=28\text{ meters}\) with constant speed \(u=4 \text{ m/s}\).

Another boy starts from the center of the circle to catch the first boy. The second boy always moves towards the first one. and maintains a speed of \(v = 4\text{ m/s}\). How long will the chase last in seconds?

Details and Assumptions:

1) Ignore air friction.

2) Take \(\pi = \dfrac{22}7\).


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