Starting from x= 0 with no initial velocity, a particle is given an acceleration a = 0.8 Vv² + 49, where a and vare expressed in ft/s² and f's, respectively. Required information Determine the speed of the particle when x = 42 ft. The speed is ft/s.

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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.