Question

A 0.5 kg ball is released from a certain height. It loses 50%of it's KE on striking the ground. It will attain a height again equal to-​

Answer 1

since at the starting all energy is converted to kinetic energy

therefore 50% loss in KE = 50% loss in PE

new energy=half of initial PE

therefore new height=half of original height

(as other factors are constant)