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A hot-air balloon is ascending at a rate of 7.5 m/s when a passenger drops a...

A hot-air balloon is ascending at a rate of 7.5 m/s when a passenger drops a camera. Part A If the camera is 25 m above the ground when it is dropped, how much time does it take for the camera to reach the ground? Express your answer to two significant figures and include the appropriate units. Part B If the camera is 25 m above the ground when it is dropped, what is its velocity just before it lands? Let upward be the positive direction for this problem. Express your answer to two significant figures and include the appropriate units

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