13_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Engineering Mechanics - Dynamics Chapter 12 Given: d 80 ft = t 1 1s = g 32.2 ft s 2 = Solution: a A g = v A gt = s A g 2 t 2 = a B g = v B gt t 1 () = s B g 2 tt 1 2 = Time to hit for each particle t A 2 d g = t A 2.229 s = t B 2 d g t 1 + = t B 3.229 s = Δ B t A = t = Speed v A A = v B v A = v A 71.777 ft s = v B 71.777 ft s = Problem 12–21 A particle has an initial speed v 0 . If it experiences a deceleration a = bt , determine the distance traveled before it stops. Given: v 0 27 m s = b 6 m s 3 = Solution: at bt = vt b t 2 2 v 0 + = s p t b t 3 6 v 0 t + = t 2 v 0 b = t 3s
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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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