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3. A water balloon is thrown vertically up with the initial velocity 20 m/s from a balcony 30 m above the ground. (a) What is maximum height above the ground the balloon will reach? (b) How much time will it take to reach the maximum height? (c) How much time will it take to reach the ground? (d) What is the balloons velocity at the instant just before it hits the ground? (Be sure to include the correct signs)
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でで - 2o 3om 2 iemssrom H= 30 20.38 50.38 420038 21 化3.2084 at U4.IXo ym

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