Two balls of the same size but different matetials, rubber and iron are kept on the smooth floor of a moving train. The brakers are applied suddenly to stop the train . Will the balls start rolling? If so, in which direction? Will they move with the same speed? Give reasons for your answers.

Two identical trains are moving on rails along the equator on earth in opposite directions with the same speed. The pressure exerted on rails will be:

A moving train is stopped by applying brakes. It stops after travelling 80 m . If the speed of the train is doubled and retardation remain the same, it will cover a distance-

A bus and a ball are moving with the same speed. To stop which one would require more force ?

Two similar trains are moving along the equational line with same speed but in opposite direction. Then :

State whether the statement given below is true or false, giving reason in brief: "Two identical trains are moving on rails along the equator on the earth in opposite directions with the same speed. They will exert the same pressure on the rails"

Two trains, which are moving along different tracks in opposite directions, are put on the same track due to a mistake. Their drivers, on noticing the mistake, start slowing down the trains when the trains are 300 m apart. Graphs given in figure show their velocities as function of time as the trains slow down. The separation between the trains when both have stopped is

Two trains 130 m and 110 m long are going in the same direction. The faster train takes one minute to pass the other completely. If they are moving in opposite directions, they pass each other completely in 3 seconds. Find the speed of each train?

Two trains, 130 m and 110 m long, are going in the same direction. The faster train takes one minute to pass the other completely. If they are moving in opposite directions, they pass each other completely in 3 seconds. Find the speed of each train