00artmck18019
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You throw a rock horizontally out of a 7th story window. You time that it takes 3.7 seconds to hit the ground, and measure that it hit the ground 115 m from the base of the building. What is the height of the 7th floor window?


PLZ HURRY YA MAN DOES NOT HAVE THAT LONG!!!!!!!!!!!

Respuesta :

Blitztiger
Since we are only looking at the vertical height, we can use the free fall equation to find the height:
h = 0.5*g*t^2, where h is height in m, g is acceleration due to gravity (9.81 m/s^2), and t is time in seconds
h = 0.5*(9.81 m/s^2)*(3.7 s)^2
h = 67.15 m
Therefore, the 7th floor window is 67.15 m above ground level.

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