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**1. Homework Statement**

A 4 kg block moving to the right at 6 m/s collides elastically with a 2 kg block moving to the right at 3 m/s. Find the final velocities and the initial and final energies. Show all your work. [ignore external forces]

**2. Homework Equations**

In an elastic collision momentum inital = momentum final and KEi = KEf

momentum = mv

KE= .5mv^2

**3. The Attempt at a Solution**

I used these equations and did some algebra but ended up getting too many variables. Am i missing some info here?

Thanks.