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q1 a hot-air balloon is rising straight up with a

Q1. A hot-air balloon is rising straight up with a speed of 1.83 m/s. A ballast bag is released from rest relative to the balloon when it is 7.86 m above the ground. How much time elapses before the ballast bag hits the ground?

Q2. An elastic cord is 64 cm long when a weight of 56 N hangs from it and is 69 cm long when a weight of 83 N hangs from it. What is the "spring" constant of this elastic cord?

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