Question 2 : 10pts | A 1,032 kg ore cart is rolling at 9.7 m/s across a flat surface. A crane dumps 698 kg of ore (vertically) into the cart. How fast does the cart move after being loaded with ore? Assume that frictional forces may be neglected. (This is a collision, but the ore is initially moving in the y direction---vertically. The flat surface prevents the cart from going down after the collision. This means there is an external force and conservation of momentum doesn't apply for the y, or vertical direction. But momentum is a vector, and there is no external force in the x direction. Use conservation of momentum for the horizontal motion.) U m/s =