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Answer to Question #71659 in Physics for riley
Question #71659
A 500 kg car traveling at 20 m/s, brakes and skids to a stop. If μk = 0.7 between the tires and the road, the magnitude of the friction force acting on the car is
2,000 N
3,500 N
5,000 N
7,500 N
2,000 N
3,500 N
5,000 N
7,500 N
Expert's answer
The magnitude of the friction force acting on the car is
F_fr=μmg
F_fr=(0.7)(500)(10)=3500 N.
F_fr=μmg
F_fr=(0.7)(500)(10)=3500 N.
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