Question

A man throw balls with the same speed vertically upwards one after the other at an interval of 2 seconds. What should
the pod of the throw so that more than two balls are in the sky at any time? (Given g = 9.8 m/s)​

Answer 1

Answer:

Interval of ball throw

If we want that minimum three (more than two) balls remains in air then time of flight of first ball must be greater than 4 sec.

T>4

2u/g>4

⇒u>20m/s

u=20m/s