- #1

kraigandrews

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## Homework Statement

Cars B and C are at rest with their brakes off. Car A plows into B at high speed, pushing B into C. Assume the collisions are completely inelastic. What fraction of the initial energy is dissipated in the collision involving car C?

Data: MA = 1010 kg; MB = 1250 kg; MC = 1470 kg.

## Homework Equations

Pinitial=Pfinal

KE=.5mv^2

## The Attempt at a Solution

Pi=Pf

m_a*Vo=(m_a+m_b+m_c)*Vo'

Q+.5m_aVo^2=.5(m_a+m_b+m_c)Vo'^2; where Q is the kinetic energy lost

I'm pretty sure these equations are correct but I don't know where to go from here?