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Homework Help: Hail stone Momentum Problem

  1. Mar 17, 2010 #1
    1. The problem statement, all variables and given/known data
    During an autumn storm, a 0.012kg hail stone traveling at 20.0m/s made a 0.20cm deep dent in the hood of Darnell's new car. What average force did the car exert to stop the damaging hail stone?
    m= 0.012kg
    v= 20m/s
    d= .002m

    2. Relevant equations
    j= f delta t

    3. The attempt at a solution

    I'm just confused :/
  2. jcsd
  3. Mar 17, 2010 #2
    Never mind, I was able to solve it. :D

    .012kg * 1/2(20m/s)^2 / .002m = 1200 N

    Too easy :)
  4. Mar 17, 2010 #3
    Hello Marco! What is the relation between average force and change in momentum?
  5. Mar 17, 2010 #4
    That's good!
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