Physics Grade 12 Q's

  • #1

Homework Statement


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.

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.
F=m((v-v')/t)

2. Because of the extreme surface to surface energy transfer, thermal energy is created melting the surface at the impact site.
 

Answers and Replies

  • #2
218
0
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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