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24 April, 03:26

You measure that it takes 0.75 seconds for a leaf to fall from a tree to the ground. the leaf experiences air resistance as it falls. if there were no air resistance, how long would it take the leaf to fall?

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  1. 24 April, 03:35
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    There's not enough information given in the problem to calculate that answer.

    A leaf falling from a tree on Earth, a sheet of printer paper falling off the back

    of a truck on Venus, and a steel ball sinking through a bucket of Scotch whiskey

    on Mars, might all reach the bottom in 0.75 second. The time it would take each

    of them to fall the same distance through a vacuum in the same place would be

    different, and the 0.75 second is not enough to enable you derive it ... even if

    you did know the acceleration of gravity in each place. All you can say is that

    without resistance, it would fall faster, and hit bottom in less than 0.75 second.
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