If a person is pushing a box inside a moving train , the work in the frame of earth will be:
`vec s_(0)`= displacement of the train relative to ground.
`vec s`=displacement of the box w.r.t. train.

The displacement by the bolt during its free fall time w.r.t. ground frame

Two train are moving in a straight line in the same direction with a speed of 80 km/h. The relative velocity of one trains w.r.t. each other is

Two train are moving in a straight line in the same direction with a speed of 80 km/h. The relative velocity of one trains w.r.t. each other is

A train is moving forward with a horizontal acceleration a. A man sitting in the train drops a coin on the floor of the train . The acceleration of the coin w.r.t man is

A train is moving forward with a horizontal acceleration a. A man sitting in the train drops a coin on the floor of the train . The acceleration of the coin w.r.t man is

A box is moved over a horizontal path by applying force F = 60 N at an angle theta = 30^(@) w.r.t the horizontal. What is the work done during the displacement of the box over a distance of 0.5 km .

A person is listening to two trains one approaching him while the other moving away from him. The speed of both the trains is 5 m/s. If both trains give off whistle of their nature frequency of 280 Hz then the observer will hear ... no of beats/s. (Velocity of sound = 350 m/s)