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Homework Help: Thermochemistry Homework Problem

  1. Mar 12, 2010 #1
    1. The problem statement, all variables and given/known data
    1. What is the kinetic energy in joules of a 950-lb motorcycle moving at 50 mph ?

    2. If the speed of the motorcycle changes from 50 mph (with kintic energy K1) to 25 mph (with kinetic energy K2), what is the ratio of K1 to K2?

    2. Relevant equations

    1. KE=1/2mv2
    The answer I got for this problem was 1.1×10 5 J

    3. The attempt at a solution

    2.k1/k2= 0.25
  2. jcsd
  3. Mar 12, 2010 #2

    Char. Limit

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    Gold Member

    Yeah, those seem about right...
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