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Modificato da Sesto:
11/9/2013 7:31:35 AM
14
A guy falling from a rooftop *serious question*
So there is a big building with lots of floors in a heavily populated city (new york or something, idk). And this building has a rooftop you can walk onto (like it has stairs leading to the rooftop).
So lets say there is a guy lying on the rooftop (thanks for those who answered that question) and another guy is standing next to him. They are both on the edge of the rooftop (thanks to Rudd for answering that question). Now the guy who is standing (joe) picks up the guy who is lying down (bob) and throws bob off the rooftop.
So how long would it take Bob to hit the ground? Obviously there is no way to be exact, just give a good estimate. Let's assume the building is like 15 stories high or something.
NOTE: building in picture is not to scale
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2 RisposteAfter the initial acceleration from the throw and fall (a dropped object does not immediately go to terminal velocity) Bob will accelerate 32 feet per second per second, until reaching terminal velocity (the speed at which an object's atmospheric drag counters the constant pull of Earth's gravitational force of 32 feet per second per second for a "constant" maximum speed, assuming the aerodynamics of the object don't change). The factors that go into determining an object's (ESPECIALLY if that object is A PERSON) individual terminal velocity requires a WHOLE LOT OF INFORMATION, including the person's shape and size... AND EVEN THEN, you'd have to come up with an average compiled from the various angles they could be falling at, as well as body position if you want one single number, which, again, will be an average of possible speeds, and is likely to be off a bit in either direction.
