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A 200-kg motorcycle and rider are traveling at 40 m/s. The rider notices a wreck ahead,...

A 200-kg motorcycle and rider are traveling at 40 m/s. The rider notices a wreck ahead, applies the brakes, and manages to stop the car in 150 meters. Using work-energy, find the force of friction used to stop the car. (Pick the answer closest to the true value.)

  1. 12,500 newtons
  2. 3,375 newtons
  3. 387 newtons
  4. 1,067 newtons
  5. 2,280 newtons
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