3. same questions as the previous problem, but for mass m just falling 3 meters in a vacuum: (a) how long does it take mass m to fall 3 meters? (b) what is its final velocity (with direction)? (c) explain what physics principle makes (b) be the same or different in problems (2) and (3).
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3. same questions as the previous problem, but for mass m just falling 3 meters in a vacuum: (a) ho...
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