Homework Help: physics

Posted by andy on Tuesday, September 18, 2012 at 12:47am.

Traveling at a speed of 18.3 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.540. What is the speed of the automobile after 1.33 s have elapsed? Ignore the effects of air resistance.

physics - Henry, Wednesday, September 19, 2012 at 4:46pm
a = -ug = -0.54*9.8 = -5.29 m/s^2.

V = Vo + at = 18.3 - 5.29*1.33=11.26 m/s

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