Albert is pulling a 25.0 kg block up a hill which has an angle of 6 = 15.5\" as shown here. He pulls it at a constant velocity a total distance of 2.?5 m. Assuming there is no friction, calculate the work done by each force listed, and thus find the total work done on the block. A hard spherical ball "B\" is at rest, and a second ball "A\" is moving at a speed of 4.00 mfs, they collide linearly and elastically. If ball A rebounds with half its initial speed, what is the ratio of their masses [mama] and what is the final velocity of ball B? How much energy is lost if a 201 gram hall of clay moving east at 2.50 mfs collides completely inelastically with a 305 gram hall of clay moving south 3.?5 mfs