SOLUTION: An apple falls from a tree that is 28m high. How long does it take for it to hit the ground?

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Question 1186551: An apple falls from a tree that is 28m high. How long does it take for it to hit the ground?
Answer by ikleyn(52817) About Me  (Show Source):
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An apple falls from a tree that is 28m high. How long does it take for it to hit the ground?
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The apple falls with uniform acceleration g = 10 m/s^2  (which is 9.81 m/s^2 rounded).


The formula connecting the distance/(the height) and the time is


    h = %28gt%5E2%29%2F2,

or

    28 = %2810%2At%5E2%29%2F2,


HENCE,  t = sqrt%282h%2Fg%29 = sqrt%28%282%2A28%29%2F10%29 = sqrt%2856%2F10%29 = sqrt%285.6%29 = 2.37 seconds.    ANSWER

Solved.

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An apple three of the height 28 m - - - never even heard about such tall apple three.