Question

A particle falls from infinity to the earth. In
on reaching the earth surface is :
(1) 2Rg
(2) Rg
|(3) Rg
(4) (2Rg) ^1/2
​

Answer 1

Answer:

It will be exactly equal to the escape velocity on the surface of the Earth. When the body is at infinity and it's velocity is 0,it's potential as well as kinetic velocity is 0. So the total Energy is 0...

Hope this helps u ✌