Inside a compartment of a train running with a uniform velocity , a boy throws a ball. Does the kinetic energy of the ball depend on the velocity of the train ?

Explanation

Here, the train running with a uniform velocity . So, if we consider the train as the frame of reference the velocity and the kinetic energy of the ball becomes zero and does not depend on the velocity of the train. When the kinetic energy is calculated, taking the earth.s surface as the inertial frame of reference, it will depend on the velocity of the train.