Given information
Kinetic Energy is the type of energy that resides in objects that are in some kind of motion or are moving.
Step-by-step explanation
Here a heavy ball is hung from the ceiling by a steel wire. The instructor pulls the ball back and leave it so the ball starts swing. During the motion of the if ball were pushed by the instructor an initial kinetic energy has been given to the ball. Now if there is no any losses, the ball has the kinetic energy as the initially given by instructor. Hence the ball still move further and hit the instructor. If the ball were not pushed by the instructor then the ball will return to its initial position if there is no frictional force but if fractional force is exist the ball will not reach to its initial position and the motion of the ball will die out.