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Al. A mass is given an initial speed vo up an inclined rough ramp. 6 m = The time for the mass to come

Al. A mass is given an initial speed vo up an inclined rough ramp. 6 m = The time for the mass to come to rest up the ramp is tup. The mass then returns down the ramp in time tdown. If tup 2.18, tdown 3.5s and 20, what is the = coefficient of kinetic friction of the rough ramp? [5 points] =

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