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11-10-2018
Physics

contestada

An object is dropped on Earth from a height of 15 m. How long did it take for the object to reach the ground?

A) 1.2 seconds

B) 1.5 seconds

C) 1.8 seconds

D)3.0 seconds

Respuesta :

georgestirban georgestirban

21-12-2018

x=gt^2/2=>t^2=2x/g=30/9.81=3.05=>t=sqrt(3.05)=1.8 s

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