taylordreiling taylordreiling

15-09-2015
Physics

contestada

A ball is thrown horizontally at 12.2 m/s from the roof of a building and lands 21.0 m from the base of the building. How high is the building?

Respuesta :

15-09-2015

S=v*t
t=S/v
h=g*t^2/2=g*(S/v)^2/2=9,81*(21/12,2)^2/2 m= 14,53309 m ~ 14,5 m ~ 15 m

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