AP Physics 1 Question 444: Answer and Explanation

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Question: 444

2. A car is driving on a flat curve with a radius of 50 m. If the coefficient of friction between the ground and the car's tires is 0.8, what is the maximum speed of the car in order to make the curve without sliding?

  • A. 8 m/s2
  • B. 12 m/s2
  • C. 16 m/s2
  • D. 20 m/s2

Correct Answer: D

Explanation:

D

When the car is making the curve, it is the force of friction providing the centripetal force: