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Compute all parts of given question:

Question: A hot-air balloon is sinking toward the ground at a speed of 3.05 m/s, when the pilot drops a couple of sandbags overboard. The balloon immediately begins to experience constant acceleration, such that it slows in its descent, stops for an instant, and begins to rise. 24.8 s after dropping the sandbags, the balloon re-attains its original altitude.

Part A: How long did it take for the balloon to reach its minimum altitude?

Part B: How far did the balloon fall during that time?

Part C: What is the speed of the balloon when it returns to the original altitude?

I would really appreciate some help for above question.

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