A person in the passenger basket of a hot-air balloon throws a ball horizontally outward from the basket with speed 10 m/s a. What initial velocity (magnitude and direction) does the ball have relative to a person standing on the ground if the hot-air balloon is rising at 5.0 m/sm/s relative to the ground during this throw? b. Express your answer to three significant figures and include the appropriate units.   c. What initial velocity (magnitude and direction) does the ball have relative to a person standing on the ground if the hot-air balloon is descending at 5.0 m/sm/srelative to the ground? d. Express your answer to three significant figures and include the appropriate units.

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Projectile Motion