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Physics Grade 12 Q's

  1. Nov 1, 2007 #1
    1. The problem statement, all variables and given/known data
    1. When a meteoroid collides with the moon, surface material at the impact site melts. Explain Why?

    2. A falling rock gains momentum as its speed increases. Does this observation contradict the law of conservation of momentum? Explain your answer.

    3. The attempt at a solution

    1. An object receiving an impulse from a smaller force has a final impulse larger then an object receiving an impulse from a larger force.

    2. Because of the extreme surface to surface energy transfer, thermal energy is created melting the surface at the impact site.
  2. jcsd
  3. Nov 5, 2007 #2
    How about re-phrasing the answer to 2 in terms of the rock and its momentum, making clear where your smaller and larger forces come into the picture?
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