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08-09-2017
Physics

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An object (initially at rest) is dropped from a height h above the ground if it takes 4 seconds for the object to reach the ground, the height h is equal to

Respuesta :

08-09-2017

Since U=0,
h=1/2gt^2 (h= ut+1/2gt^2, U=0)
h=1/2*10*4*4
h=80m

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