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

Car 1 weighing 1000 kg crashes into the rear of parked car 2 weighing 1100 kg and stops. Car2 moves ahead 2 ms^{2}. What is the velocity of car1 at impact?

2. Relevant equations

(m1v1+m2v2)=(m1v3+m2v4)

3. The attempt at a solution

(m2V4)/m1

(1100*2)/1000

2.2ms^{2}= 2200/1000

Okay, now I know this is right, but what I don't know is how do they arrive at the equation (m2v4)/m1 ????

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# 2D Momentum Problem

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