GENERAL KNOWLEDGE

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: -As an object falls its potential energy decreases, while its kinetic energy increases. The decrease in potential energy is exactly equal to the increase in kinetic energy.

Detailed explanation-3: -When objects fall to the ground, gravity causes them to accelerate. Acceleration is a change in velocity, and velocity, in turn, is a measure of the speed and direction of motion. Gravity causes an object to fall at a faster and faster velocity the longer the object falls.

Detailed explanation-4: -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.

Detailed explanation-5: -As the ball falls towards the ground, its gravitational potential energy is transformed into kinetic energy. The kinetic energy of the ball will continue increasing as the ball gains momentum, until it finally collides with a surface. When the ball collides, the kinetic energy is transformed into other forms of energy.