Hockey player A carries the puck on his stick and moves in the direction shown with a speed VA = 4.6 m/s. In passing the puck to his stationary teammate B, by what angle a should the direction of his shot trail the line of sight if he launches the puck with a speed of 6.0 m/s relative to himself?

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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.