A shell is fired vertically upward with a speed of 60 m s

Last updated: 6/21/2023

A shell is fired vertically upward with a speed of 60 m s When it is at maximum height it explodes into large number of fragments Assume that the fragments fly in every possible direction and all of them have same initial speed of 25 m s The minimum time taken in sec by any one fragment to reach at ground will be