A 400-N weight starts down the incline of 30o with the horizontal with an initial velocity of 4m/s. Find the velocity of the weight after 10s if fk = 0.2 for the incline.

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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.