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Help!!!! Me !! A bird drops a shell over the ocean from a height of 60 feet. the following function models the height of the shell in feet after t seconds.

h=−16t^2+64
How long does it take the shell to hit the surface of the ocean?

Question 3 options:

1.5 seconds


2 seconds


4 seconds


both -2 seconds and +2 seconds

Respuesta :

abidemiokin

The time it takes the shell to hit the surface of the ocean is 2 secs

Equations and expression

Give the function models for the height of the shell in feet after t seconds expressed as:

h=−16t^2+64

The shell will hit the surface of the ocean at h = 0

0=−16t^2+64

16t^2 = 64

t^2 = 4

t = 2secs

Hence the time it takes the shell to hit the surface of the ocean is 2 secs

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