In a free-fall experiment, an object is dropped from a height of 144 feet. A camera on the ground 500 feet from  the point of impact records the fall of the object. Assuming the object is released at time t = 0.  Find the rate of change of the angle of elevation of the camera when ? = 1

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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.