vector

. A cannon ball is fired horizontally with an initial speed of 75 m/s from the top of a 50-m tall building. When the ball hits the ground, its velocity vector makes an angle θ with the horizontal. What is θ ?

11. A major-league pitcher can throw a baseball in excess of 42.4 m/s. If a ball is thrown horizontally at this speed and acts like a projectile, how much will it drop by the time it reaches the catcher who is 17.0 m away from the point of release?

An illness caused by a protist is? protozoa is my answer i think is it right?

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