List of top Physics Questions on Newtons Laws of Motion asked in JKCET

Assuming earth to be an inertial frame, an example for inertial frame observer is

From the top of a tower a body $A$ is projected vertically up, another body $B$ is horizontally thrown and a third body $C$ is thrown vertically down with same velocity. Then

A ball is released from the top of a tower. The ratio of work done by force of gravity in first, second and third second of the motion of the ball is