A train is moving along a straight line with a constant acceleration a. A body standing in the train throws a ball forward with a speed of `10ms^(-1)`, at an angle of `60^(@)` to the horizontal . The body has to move forward by 1.15 m inside the train to cathc the ball back to the initial height. the acceleration of the train. in `ms^(-2)` , 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 slowly on a straightly track with a constant speed of 2 ms^(-1) . A passenger in the train starts walking at a steady speed of 2 ms^(-1) to the back of the train in the opposite direction of the motion of the train . So, to an observer standing on the platform directly in the front of that passenger appears to be

The coach throws a baseball to a player with an initial speed at 20ms^(-1) at an angle of 45^(@) with the horizontal.At the moment the ball is thrown, the player is 50m from coach.The speed and the direction that the player has to run to catch the ball at the same height at which it was released in ms^(-1) is

A boy sitting at the rear end of a railway compartment of a train, running at a constant acceleration on horizontal rails throws towards the fore end of the compartment with a muzzle velocity of 20m/sec at an angle 37^(@) above the horizontal, when the train is running at a speed of 10 m/sec. If the same boy catches the ball without moving from his seat and at the same height of projection,find the speed of the train at the instant of his catching the ball.

A body is projected at an angle of 30^(@) with the horizontal and with a speed of 30ms^(-1) . What is the angle with the horizontal after 1.5 second? (g=10ms^(-2))

A body is projected at an angle of 30^@ with the horizontal and with a speed of 30 ms^-1 . What is the angle with the horizontal after 1.5 s ? (g = 10 ms^-2) .

A body is moving with variable acceleartion (a) along a straight line. The average acceleration of body in time interval t_(1)" to "t_(2) is :-