Posted by **Hanu** on Saturday, September 29, 2012 at 3:45pm.

(a) A 10 kg box of candy rests on a floor with a coefficient of static friction of 0.30. What force is needed to move the box?

b) What is the coefficient of kinetic friction between a rubber tire and the road if a 2000 kg car needs 1.57 × 104 N to keep the car moving at a constant speed?

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