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Homework Help: Please help How much ice melts?

  1. Nov 10, 2007 #1
    Please help...How much ice melts???

    1. The problem statement, all variables and given/known data
    A 70 gram bullet traveling at 250 m/s penetrates a block of ice at 0 degrees Celsius and comes to rest within the ice. Assuming that the temperature of the bullet doesn't change appreciably, how much ice is melted as a result of the collision?

    3. The attempt at a solution
    I don't know where to start on this???
  2. jcsd
  3. Nov 10, 2007 #2


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    Homework Helper
    Gold Member

    Questions to get you started:

    How much energy is needed to melt a gram of ice?

    How much energy does the bullet give to the block of ice when it slows down?
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