A golf ball is launched with the initial conditions shown in the figure. Determine the radius of curvature of the trajectory and the time rate of change of the speed of the ball (a) just after launch and (b) at apex. Neglect aerodynamic drag. (a) Just after launch, determine the speed v of the ball, the total acceleration a of the ball, the normal component of acceleration an and the tangential component of acceleration at. Answers: v =  ____ft/sec a =  ____ft/sec2 an =  ____ft/sec2 at =  ____ft/sec2

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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.