Physics
posted by Syl .
Two crates, of mass m1 = 60 kg and m2 = 130 kg, are in contact and at rest on a horizontal surface (Fig. 454). A 620 N force is exerted on the 60 kg crate. The coefficient of kinetic friction is 0.15
a)Calculate the acceleration of the system.
b) calculate the force that each crate exerts on the other.
c) Repeat with the crates reversed.
I was able to calculate the acceleration

try 0.5mv*2=mgh

This question didn't post properly. I was able to find the acceleration (1.79m/s^2), having difficulties getting the force. what would "h" be in your equation? to me that symbolizes height and there's no height in this problem.

If you have a, then F=ma