A red cart is moving rightward with a momentum of 100 kg°cm/s when it collides with a blue cart that is also moving rightward with a momentum of 60 kg cm/s.
The collision causes the red cart to slow down and the blue cart to increase its momentum to 90 kg°cm/s.
Enter the momentum values of each individual cart and of the system of two carts before and after the collision. Also indicate the change in momentum of the carts and of the system.