Question

Bob is driving his car at **20 m/s** down a hill
with a slope of 5 degrees. When a deer suddenly jumps out of the
woods onto the road, he slams on the brakes, and the car skids to a
stop. The mass of the car is 1500 kg, and the coeﬃcient of kinetic
friction between the tires and the road is µk = 0.816.

a) (3 points) Draw a free-body diagram for the car.

b) (3 points) Determine the friction force that the road applies to
the tires.

c) (6 points) Calculate the distance that the car skids before
coming to a stop.

d) (3 points) Calculate the work that is done by friction.

Answer #1

three 1500 kg cars are driving at 25m/s along the road. Car A is
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and starts to skid. (b) Determine the magnitude and direction of
each car's acceleration. The coefficient of kinetic friction
between the tires and...

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If the pavement is wet, μk is reduced to 0.3. Now how far would
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A car, 1110 kg, is traveling down a horizontal road at 20.0 m/s
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You're driving down the highway late one night at 20m/s when a
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