When looping the loop, the Blue Angels stunt pilots of the U. S. Navy fly their jet aircraft along a vertical circle of diameter 10001000 m. At the top of the circle, the speed is 350350 km/h; at the bottom of the circle, the speed is 620620 km/h. What is the centripetal acceleration at the top? At the bottom? In the reference frame of one of these aircraft, what is the acceleration that the pilot feels at the top and at the bottom; that is, what is the acceleration relative to the aircraft of a small body, such as a coin, released by the pilot?

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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.