Answer to Question #157450 in Mechanics | Relativity for Sage Topaz

Question

A ball is dropped from a height of 60 m. How high abo e the ground will it be when 1/3 of its total energy is Kinetic energy?

Answer 1

The potential energy ($mgh)$ of the ball is dependent on the height the ball is from the ground and is converted to kinetic energy when the ball is falling.

when 1/3 of its total energy is Kinetic energy, height covered $=1/3\times 60m=20m$

height above the ground$=60m-20m=40m$