A metal plate of mass 200g is balanced in mid air by throwing 40 balls per second , each of mass 2g vertically upward from below . The balls get rebounded with the same speed with which they strike the plate . Find the speed with which the balls strike the plate.

A metal plate of mass 200g is balanced in mid air by throwing 40 balls

1.	A metal plate of mass 200g is balanced in mid air by throwing 40 balls per second , each of mass 2g vertically upward from below . The balls get rebounded with the same speed with which they strike the plate . Find the speed with which the balls strike the plate.
Answer» ANSWER :`12.25 m//s`