JEE Advanced 2011 Physics question
A train is moving along a straight line with a constant acceleration 'a'. A boy standing in the train throws a ball forward with a speed of 10 m/s, at an angle of 60° to the horizontal. The boy has to move forward by 1.15 m inside the train to catch the ball back at the initial height. The acceleration of the train, in , is
Answer: 5
Solution
In the train's frame the ball has initial velocity components m/s and m/s, and accelerations (pseudo force) horizontally and vertically. Time to return to the initial
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