If there were no air resistance, how long would it take a
Chapter 2, Problem 81(choose chapter or problem)
If there were no air resistance, how long would it take a free-falling skydiver to fall from a plane at 3200 m to an altitude of 450 m, where she will open her parachute? What would her speed be at 450 m? (In reality, the air resistance will restrict her speed to perhaps )
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