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

Two cars A and B slide on an icy road as they attempt to stop at a light. The mass of A is 1100kg, B is 1400kg. The coefficient of kinetic friction between both cars is 0.130. Car A comes to rest at the light, but car B rear-ends car A. After the collision, A comes to rest 8.2m from the collision point, and B 6.1 meters from collision point.

(a) From the distanced traveled by each car, find the speed of each after impact.

(b) Use conservation of momentum to find the speed when B hit A.

2. Relevant equations

m1v1i + m2v2i = m1v2f + m2v2f

3. The attempt at a solution

I only know how to solve part (b), but I need information from A to actually calculate it. The equation is based on the conservation of momentum. Where the initial velocity of car B is v2i = (m1v1f + m2v2f)/m2 ...I think....

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# Homework Help: Challenging Momentum of Collision Problem

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