A slender rod with a length of 40 cm and a mass of 2 kg is falling at a rate of 1.5 m/s and at a 35-degree angle as shown below. The rod then strikes a surface and rebounds off it. Assuming that the coefficient of restitution for the impact is .9, and that there is negligible friction between the body and the surface, what is the expected velocity of the center of the rod (C) and the angular velocity immediately after impact?

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.