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|| Two projectiles are fired at 20 m/s from the top a 50-m-tall building. Projectile A is fired at an angle of 30° above the horizontal, while projectile B is fired at an angle of 30° below the horizontal. Calculate (a) the time for each projectile to hit the ground and (b) the speed at which each hits the ground. What can you conclude about the relationship between the launch angle and the speed at which a projectile hits the ground?
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