47_Dynamics 11ed Manual

# 47_Dynamics 11ed Manual - v 2 . To do so the motorcyclist...

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Engineering Mechanics - Dynamics Chapter 12 Problem 12–57 The jet car is originally traveling at speed v 0 when it is subjected to the acceleration shown in the graph. Determine the car’s maximum speed and the time t when it stops. Given: v 0 20 m s = a 0 10 m s 2 = t 1 20 s = Solution: at () a 0 1 t t 1 = vt () v 0 0 t t at () d + = s p t () 0 t t vt () d = Guess t stop 30 s = Given vt stop () 0 = t stop Find t stop () = v max vt 1 () = v max 120 m s = t stop 41.909 s = Problem 12-58 A motorcyclist at A is traveling at speed v 1 when he wishes to pass the truck T which is traveling at a constant speed
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Unformatted text preview: v 2 . To do so the motorcyclist accelerates at rate a until reaching a maximum speed v 3 . If he then maintains this speed, determine the time needed for him to reach a point located a distance d 3 in front of the truck. Draw the v-t and s-t graphs for the motorcycle during this time. Given: v 1 60 ft s = d 1 40 ft = v 2 60 ft s = d 2 55 ft = v 3 85 ft s = d 3 100 ft = a 6 ft s 2 = 45...
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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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