[Solved] A train is moving along a straight line with a constant acceleration ‘a’. A boy standing in the train throwsa ball forward with a speed of 10 m/s, at an angle of 60^\\circ to the horizontal. The boy has to move forward by 1.15 m inside the train to catch the ball backat the initial height. The acceleration of the train, in m/s^2, is - - JEE (Advanced) 2011 Paper-2