If someone was 137 and 5 foot 7 in. how many newtons would it take them to escape the gravity of earth?
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I understand now why the sky is blue, but why are sunsets red and orange? - AB, Oak Ridge, TN
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Is it possible to have an instantaneous zero speed but still have an acceleration? Please give an example. - J
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Would a vertical pipe 50 miles long, one end at or near sea level and the other end in space, suck air into space? It seems as though the vacuum of space should create a flow through the pipe since the pressure at each end is different. - P
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It was my understanding that the velocity of an object falling through air has to do with gravity and wind resistance only. Does the object's velocity have anything to do with its weight or mass? - JVN, Brisbane, Australia
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