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Relation between h d and u
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Asked by Prashant DIGHE | 13 Jul, 2019, 09:58: AM
answered-by-expert Expert Answer
Let particle P1 is dropped from height h. If it hits the ground after t seconds, then we have,  h = (1/2)gt2 ...............(1)
 
during this time t seconds, particle P2 has travelled a horizontal distance d with horizontal velocity  u m/s.
 
Hence we have,      t = d/u .................(2)
 
substituting for t using eqn(2),  eqn.(1) is rewritten as,  h = (1/2) g (d/u)2 
 
hence we have,  h = gd2 /(2u2)
Answered by Thiyagarajan K | 13 Jul, 2019, 10:45: AM

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