JasonVoorhees2 JasonVoorhees2

22-05-2017
Mathematics

contestada

if a bridge is 1,053 feet above the Arkansas river, about how long will it take before the stone hits the water?

Respuesta :

22-05-2017

Assuming air resistance is negligible and a constant gravitational field.

h(t)=1053-16t^2 So the stone will hit the water when h(t)=0 so

1053-16t^2=0

16t^2=1053

t^2=65.8125, since t>0

t≈8.1 seconds (to nearest tenth of a second)

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