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Homework Help: Newtons 2nd Law - Kinematic

  1. Oct 29, 2006 #1
    Can you please help me out with this problem?!?

    Suppose that a 1000 kg car is traveling at 25 m/s (about 55 mph). It brakes can apply a force of 5000 N. What is the minimum distance required for the car to stop.

    :confused:
     
  2. jcsd
  3. Oct 29, 2006 #2
    acceleration=f/m
    that's negative 5m/(ss)
    Now the kinematics are easy--but ask if you need help.

    Another approach is energy. Work to stop the car=car's kinetic energy=
    (.5)(mass)(velocity squared)= (distance)(force by brakes)
     
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