37. A stone is dropped from the roof of a house towards the ground. The kinetic energy of the stone will be maximum: A.Just after it is dropped B.When it is just on the half-way C.Just before it touches the ground D.When it touches the ground
Option C Solution: When an object reaches the ground it has its maximum value of kinetic energy just before touching the ground. Since kinetic energy + potential energy= Constant; so on reaching ground the potential energy of an object becomes zero (0). The kinetic energy on reaching ground becomes maximum.
