A tennis ball is projected upward with a velocity of 120 m/s. Neglecting air resistance, how long will it take for the ball to strike the ground? a. 12.5 s b. 31.1 s c. 25 s d. 34.1 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.