A 020 kg billiard ball is thrown at a 45 degree angle, Ask an Expert

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A 0.20 kg billiard ball is thrown at a 45 degree angle upwards from the edge of a 12.192 meters tall building. The ball lands 20.0 meters from the base of the building.

(a) What was the speed of the ball when it was launched?

(b) How long was the ball in the air? (Neglect air resistance).

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