bossaisbissan bossaisbissan

25-10-2020
Mathematics

contestada

The function y equals negative 16 t squared plus 486 models the height y in feet of a stone t seconds after it is dropped from the
edge of a vertical cliff. How long will it take the stone to hit the ground? Round to the nearest hundredth of a
second.

Respuesta :

dolfydcosta2007 dolfydcosta2007

25-10-2020

Answer:

Step-by-step explanation:

Set y to zero and solve for t:

y = -16t^2 + 486

0 = -16t^2 + 486

16t^2 = 486

t^2 = 30.375

t = 5.51 seconds

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