SSC MTS EXAM

Detailed explanation-1: -When an object falls freely towards the ground, its potential energy decreases and kinetic energy increases. As the object touches the ground, all its potential energy gets converted into kinetic energy. As the object hits the hard ground, all its kinetic energy gets converted into heat energy and sound energy.

Detailed explanation-2: -On its way down the object loses height and gains speed; it thus loses gravitational potential energy and gains kinetic energy. One can then say that the gravitational potential energy is being transformed to kinetic energy as the object falls.