A 400g dynamics carts is traveling horizontally at 4m/s. It travels up a 40cm tall rough ramp to get to another horizontal section where it has a speed of 2m/s. On this horizontal section it collides with and sticks to another cart. After the collision the two carts have a speed of 1.5m/s. Assume energy can only be wasted on the ramp and in the collision. A. How much energy was wasted as the cart traveled up the ramp? R What is the mass the second cart