Question

Asked Nov 4, 2019

A 1800 kg car traveling at a speed of 13 m/s skids to a halt on wet concrete where μk = 0.30.

How long are the skid marks?

Step 1

Consider the weight of the car be *w*, mass of the car be *m*, the normal reaction of the car be *N*, the frictional force between the tires of the car and concrete be *F _{f}*, the acceleration of the car be

Consider the free body diagram of the car,

Step 2

Apply Newton’s second law of motion along vertical direction on the car.

Step 3

Apply Newton’s second law of motion al...

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