In: Physics
Question 1: 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.
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