- 15

- 0

**1. Homework Statement**

A loaded coal car with a mass of 120 metric tons traveling at 2 m/s collides and couples with an empty, stationary coal car with a mass of 8 metric tons. (1 metric ton = 103 kg)

(c) What is the speed of the center of mass of the system of two cars throughout the process?

**2. Homework Equations**

I am not sure of any relevant equations for part c but I know that M1r1=M2r2 deals with center of mass systems.

**3. The Attempt at a Solution**

I already solved parts a and b which are about final speed of two cars, and change in kinetic energy respectively.

Thanks for the help

Last edited: