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# (Solved): Use the worked example above to help you solve this problem. A ball is thrown upward from the top ...

Use the worked example above to help you solve this problem. A ball is thrown upward from the top of a building at an angle of to the horizontal and with an initial speed of . The point of release is above the ground. (a) How long does it take for the ball to hit the ground? w Your response differs from the correct answer by more than . Double check your calculations. S (b) Find the ball's speed at impact. (c) Find the horizontal range of the ball. EXERCISE HINTS: GETTING STARTED I I'M STUCK! Suppose the ball is thrown from the same height as in the PRACTICE IT problem at an angle of below the horizontal. If it strikes the ground away, find the following. (Hint: For part (a), use the equation for the -displacement to eliminate from the equation for the -displacement.) (a) the time of flight S (b) the initial speed (c) the speed and angle of the velocity vector with respect to the horizontal at impact speed angle - below the horizontal

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