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Cool goIITian

Joined:	30 Mar 2010
Post:	34

2 Apr 2012 09:34:20 IST

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URGENT: projectile motion

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A tennis ball rolls off the top of a stair case way with a horizontal velocity u m/s. If the steps are b metre wide and h metre high, the ball will hit the edge of the nth step if n = ?(find the value of n in terms of u, h, b, and g)

Comments (2)

kartikAIR1

Blazing goIITian

Joined: 2 Mar 2012

Posts: 307

2 Apr 2012 10:13:13 IST

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I got this

n = (u/b)root(2h/g)[ 2*(1+root2+root3+root4+......+root(n-1)) + root n ]

VISHVA THEJESHWAR

New kid on the Block

Joined: 29 Jun 2011

Posts: 3

5 Apr 2012 22:40:11 IST

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even i got this

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