marianesabrinap20
Answered

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100 POINTS!!!
When an object is dropped, its height h can be determined after
t seconds by using the falling object model h= -16t2 + s where s is
the initial height. Find the time it takes an object to hit the ground
when it is dropped from a height of s feet.
31.S=100
32.S=196
33.S=480
34.S=600
35.S=750
36.S=1200

Sagot :

1424112

Answer:

The rock will reach to the canyon floor in 3.99 seconds.

Step-by-step explanation:

The height h (in feet) of an object t seconds after it is dropped can be modeled by the quadratic equation

Where, h0 is the initial height of the object.

It can be written as

The height of the object is zero if it will reach to the canyon floor.

Quadratic formula:

Here a=-16, b=0 and c=255.

Time cannot be negative, therefore the rock will reach to the canyon floor in 3.99 seconds.

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