A 0.2-kg wad of clay is rolensed from rost and drops 2 m to a concrete floor. The clay does not rebound, and the collision lasts 0.04 s. Determine the time average of the force which the floor exerts on the clay during the impact. 0.2 kg 2 m

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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.