Asked by Eduardo

A car with engine trouble slides 85 meters up along a 14 degrees ramp before coming to a stop. If the coefficient of friction between the tires and the road is 0.9, what was the velocity of the car at the bottom of the ramp?

I get 32.43 meters / second
is this correct?
Answered by bobpursley
initial KE=workdonebyfriction+final PE
1/2 m v^2= mg*mu*cos14*85 + mg*85sin14

solve for v.
Answered by Eduardo
can you explain how you derive that equation?
Answered by Eduardo
we haven't learned about potential energy yet? is there another way to solve this?
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