(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Two people of different masses are riding in a sleigh on frictionless ice.

One has mass m1 and the other has mass m2.

When they jump out of the sleigh each has speed u respect to the sleigh.

(I). What is the final velocity of the sleigh if they jump simultaneoulsy in the +x direction?

(II). What is the final velocity of the sleigh if one with mass m1 jumps first and

the other person with mass m2 jumps a few seconds later?

2. Relevant equations

conservation of momentum and energy (I think)

3. The attempt at a solution

I tried using momentum and energy but somehow I ended up having u = 0,

which seems to be wrong. Please help!

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# Homework Help: Momentum & energy

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