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Calculate the maximum acc. of a car that is heading up a 4 degree slope. Assume that only half the weight of the car is supported by the two drive wheels and the static coefficient friction is involved- the tires can not slip during the acceleration
a) on dry concrete, us=10 uk=.7
b) on wet concrete, us=.7 uk=.5
c) on ice us=.1 uk=.05

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