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Mr. X drops A ball from a height of 1 metre above the ground. Mr. Y starts a camera which takes picture of the ball every 250 ms, with the first click occuring at the moment Mr. X lets go of the ball. Let the ball's height about the ground at the n-th click, in metres, be h_n. Compute the value of [(h_3+h_4+h_5)/h_2]

Assumptions: If the ball makes a collision with the ground, its totally elastic.

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