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(a) You take the elevator to the roof of a midtown skyscraper that is 100 meters high. As you are leaning over the edge to get a good view, you drop the 2 kg souvenir that you just bought. How long before it hits the ground?

(b) this reminds one of your friends from a class discussion and she throws her souvenir of same mass upward with a velocity of 5 m/s at an angle of 30 degrees to the horizontal. How long will it take to hit the ground??

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