how many windows does the building have if the ball takes 5 sec to hit ground?

a ball is dropped from the window of a tall building.every floor has 10  windows and the height of each floor is 12 ft.
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1 Answer

yu drop sumthun & ignore aer-resist, then vertikal drop =(1/2)g*t*t

g=gravity=32.2 ft/sek-sek

5 sekonds:32.2*5*5/2=25*16.1

=402.5 ft

me leev it tu yu tu kount windoes
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