Hi Aspirant,

As the query belong to physical sciences, In physics, the kinetic energy (KE) of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body when decelerating from its current speed to a state of rest.

if a speed of uniformly moving body is reduced by 50%, the percentage of decrease in it's kinetic energy is One fourth of the Initial Height,