A baseball is thrown from the roof of h = 21.9-m-tall building with an initial velocity of magnitude 12.7 m/s and directed at an angle of 53.1° above the horizontal. What is the speed of the ball just before it strikes the ground? Use energy methods and ignore air resistance. Express your answer in meters per second. For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Energy in projectile motion. v2 = m/s Submit Request Answer Part B What is the answer for part (A) if the initial velocity is at an angle of 53.1° below the horizontal? Express your answer in meters per second. ? v2 = m/s Submit Request Answer Part C

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