Posted by bbbb on Sunday, July 8, 2012 at 7:55am.
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\ A Motorcycle slowed down to rest from avelocity of 10 m\sec while traveling 30 m. what is its average acceleration
d = (1/2) a t^2 = 30
v = a t = 10 so t = 10/a
60 = a (100/a^2)
a = 5/3
negative because deaccelerating
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