Unformatted text preview: Name Problem C (24 Points) A hydrogen atom moving at +5.0 x 10° i m/s collided with a helium atom initially at rest. After the collision, the velocity of the hydrogen atom was —3.0 x 106 l m/s. For this problem, we will
assume that the mass of a helium atom is exactly four times the mass of a hydrogen atom (to
make the calculations easier) and we will neglect all external forces during the collision. Was the collision elastic? Explain your answer in a few sentences supported by calculations. initial
0 —> +5.0x105m/s Q H He ﬁnal
—3.0xlo°m/s <— 0 —> ? H He ...
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