Standing at the edge of the roof of a tall building, you throw a ball upward with a velocity of 15 m/s (meters per second). The ball goes straight up and begins its downward descent just missing the edge of the building. The building is 40 m tall.
(a) What is the velocity of the ball at its uppermost position?
(b) How high above the building does the ball go before beginning its descent?
(c) What is the velocity of the ball as it passes the roof of the building?
(d) What is the speed of the ball just before it hits the ground?
(e) How long does it take for the ball to hit the ground after leaving your hand?
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