Kinematics 5 Question 10
12. A train is moving along a straight line with a constant acceleration . A boy standing in the train throws a ball forward with a speed of , at an angle of to the horizontal. The boy has to move forward by inside the train to catch the ball back at the initial height. The acceleration of the train, in , is.
(2011)
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Answer:
Correct Answer: 12.
Solution:
Displacement of train in time
Displacement of boy with respect to train
Displacement of ball with respect to ground
$$ \begin{aligned}