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

A 82kg girl is coasting along the floor on a large 2.0kg skateboard. If she is moving 1.8 m/s when a 46kg boy jumps on to the same skateboard, what is the speed of the skateboard immediately after the boy jumps on it?

2. Relevant equations

Sum of Initial Momentum = Sum of Final Momentum

3. The attempt at a solution

This question looked pretty easy.. but Im sure Im doing something wrong... here's what I did so far:

(84kg)(1.8m/s) + (130kg)(0m/s) = (84kg + 130kg)Vf

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# Homework Help: Momentum Question

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