chute delivering shipments of freight is so designed that the boxes starting from rest, receive a uniform acceleration of 18 ft. / sec2 on the first section which is 18 ft. long. Then they are retarded by a 6 ft. / sec2 uniform deceleration on the next section. It the total time

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A: The given information in the problem is listed in the following attached image:

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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.