Question

A ball of mass in is thrown vertically up with an initial velocity so as to reach a height h. The correct statement is:
(a) Potential energy of the ball at the ground in mgh.
(b) Kinetic energy imparted to the ball at the ground is zero.
(c) Kinetic energy of the ball at the highest point is mgh.
(d) potential energy of the ball at the highest point is mgh.

Answer 1

$PE\propto h$

$KE\propto v^2$

Potential enemy of the ball at the highest point is mgh.

At the highest point. the ball momentarily tomes to rest and thus its kinetic energy becomes zero.