# Physics for understanding

Okay we have this problem: 50 kg mass traveling at 10 m/s strikes a 100kg mass at rest find the final velocity each....if...

1. it is elastic

2. if it isnt elastic

i know for an elastic something has to be 100% like 100% of momentum is conserved. I don't know how to set up equations for this logically i know 1/2mv^2 is Ke and mv=p

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1. duplicate post. See my answer to the other post of the same question.

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posted by drwls
2. http://www.jiskha.com/display.cgi?id=1273626148

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posted by drwls

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