Two pieces of clay are moving directly toward each other. When they collide, they stick together and move as one piece. One piece has a mass of 332 grams and is moving to the right at a speed of 1.45 m/s. The other piece has mass 633 grams and is moving to the left at a speed of 0.967 m/s. What fraction of the total initial kinetic energy is lost during the collision? In other words what is KE, - KEf, KE; Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8