**1. The problem statement, all variables and given/known data**

In a railroad accident, a boxcar weighing 200 kN and traveling at 3.00 m/s on a horizontal track slams into a stationary caboose weighing 400 kN. The collision connects the caboose to the boxcar. How much energy is transferred from kinetic energy to other forms of energy in the collision?

**2. Relevant equations**

KE= 1/2 m v^2

P= mv

**3. The attempt at a solution**

KE initial= 1/2 (200000) (3)^2

=900000 J

P initial= 200000 (3)

=600000 kg m/s

I have no idea where to go from here

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