A body falls freely from the top of a tower and during the last second of its falls through 25m. Find the height of tower.
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at last second it travels 25 m so displacement =velocity × time
so velocity of body is 25 at last second
by taking value of g 10 m/s final velocity is 25+10 = 35 . by using v=u+gt where u=0 and v is 35 . t= 3.5 sec
by using s= ut +1/2 g t square . height of tower is 61.25 m .
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