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Motion with Constant Acceleration

  1. Oct 30, 2009 #1
    1. The problem
    A motorcyclist slows down uniformly as he approaches a red light. He takes 3.2 seconds to come to a halt and travels 40m in this time.
    How fast was he travelling initially?


    2. Relevant equations

    s=(u+v)/2*t
     
  2. jcsd
  3. Oct 30, 2009 #2
    Any other kinematic equations? If you can find his acceleration, I bet you could find his initial velocity.
     
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