At a NASA research center free-fall research is performed by dropping experiment packages from the top of an evacuated shaft 145 m high. Free-fall imitates the so-called microgravity environment of a satellite in orbit. (a) What is the maximum time interval for free fall if an experiment package were to fall the entire 145 m?   (b) Actual NASA specifications allow for a 5.10 s drop time interval. How far do the packages drop in 5.10 s?   (c) What is their speed at 5.10 s?

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Projectile Motion