As a railway engine moves along the tracks, its wheels go round and round while the train moves forward and the piston moves back and forth.What is the type of motion around us.

A fast moving bullet when hits the window pane makes a round hole while a stone strikes and shatters it, why ?

Two trains are moving with equal speed in opposite directions along two parallel railway tracks. If the wind is blowing with speed u along the track so that the relative velocities of the trains with respect to the wind are in the ratio 1:2, then the speed of each train must be

A man stretches a spring attached to the front wall of railway carriage over a distance l in a uniformly moving train. During this time the trai covers a distance L. Does the work done by the man depend on the coordinate system related to the earth or the train? the man moves opposite to the direction of motion of the train as he stretches the spring.

A railway carriage moves over a straight track with acceleration a. Passenger in the carriage drops a stone. What is the acceleration of the stone w.r.t. the carriage and the earth?