A neon atom (m = 12 u) makes a perfectly elastic collision with another atom at rest. After the impact, the neon atom tr

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answerhappygod
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A neon atom (m = 12 u) makes a perfectly elastic collision with another atom at rest. After the impact, the neon atom tr

Post by answerhappygod »

A neon atom (m = 12 u) makes a perfectly elastic collision
with another atom at rest. After the impact, the neon atom travels
away at 55.6° angle from its original direction and the unknown
atom travels away at a -50.0° angle from that original direction.
What is the mass (in u) of the unknown atom?
please use conservation of momentum in an isolated
system
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