the ball is kicked at an angle of 30° A) if it strikes the ground at B having coordinates (15, -9), determine the speed at which it is kicked, in ft/s B.) if the ball is kicked at a speed of 80 ft/s, determine the point 'y' , in feet, where it strikes the ground. Assume the ground has shape of parabola as shown. C) if the ball is kicked at a speed of 80 ft/s, determine the point 'x' , in feet, where it strikes the ground. Assume the ground has shape of parabola as shown.

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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.