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. 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.