53_Dynamics 11ed Manual - = v 4 2 a 4 s 4 = v 4 12.649 ft s...

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Engineering Mechanics - Dynamics Chapter 12 0 50 100 150 200 0 5 10 15 20 Distance in m Acceleration in m/s^2 a 1 σ 1 () a 2 2 () 1 2 , Problem 12-63 Starting from rest at s = 0, a boat travels in a straight line with an acceleration as shown by the a-s graph. Determine the boat’s speed when s = s 4 , s 5 , and s 6 . Given: s 1 50 ft = s 5 90 ft = s 2 150 ft = s 6 200 ft = s 3 250 ft = a 1 2 ft s 2 = s 4 40 ft = a 2 4 ft s 2 = Solution: 0 s 4 < s 1 < a 4 a 1
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Unformatted text preview: = v 4 2 a 4 s 4 = v 4 12.649 ft s = v 1 2 a 1 s 1 = s 1 s 5 < s 2 < a 5 a 2 = v 5 2 a 5 s 5 s 1 − ( ) v 1 2 + = v 5 22.804 ft s = v 2 2 a 2 s 2 s 1 − ( ) v 1 2 + = s 2 s 6 < s 3 < v 6 v 2 2 2 s 2 s 6 s s 3 s − s 3 s 2 − a 2 ⌠ ⎮ ⎮ ⌡ d + = v 6 36.056 ft s = 51...
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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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