75_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Engineering Mechanics - Dynamics Chapter 12 t min t max v min v max Find t min t max , v min , v max , () = t min t max 0.186 0.309 s = v min v max 0.838 1.764 m s = * Problem 12-96 A boy at O throws a ball in the air with a speed v 0 at an angle θ 1 . If he then throws another ball at the same speed v 0 at an angle 2 < 1 , determine the time between the throws so the balls collide in mid air at B . Solution: xv 0 cos 1 t = v 0 cos 2 t Δ t = y g 2 t 2 v 0 sin 1 t + = g 2 t t 2 v 0 sin 2 t t + = Eliminating time between these 2 equations we have t 2 v 0 g sin 1 2 cos 1 cos 2 +
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This note was uploaded on 08/16/2011 for the course EGN 3321 taught by Professor Christianfeldt during the Spring '08 term at University of Central Florida.

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