A spherical ball of mass `20kg` is stationary at the top of a hill of height `100m` , it
Channel: Doubtnut
Date: 2020-07-05

A spherical ball of mass `20kg` is stationary at the top of a hill of height `100m` , it rolls down a smooth surface to the ground , then climbs up another bill of height of `30 m` and final rolls down to a horizontal base at a height of `20 m` about the ground . The velocity attained by the ball is