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andriy [413]
3 years ago
15

7. The height Of an object x seconds after it is kicked in the air is modeled by the expression -16 + 8t. How long does it take

the object to hit the ground?
Mathematics
1 answer:
Nata [24]3 years ago
3 0

Answer:

2 seconds

Step-by-step explanation:

The height of the object is modeled by the expression -16 + 8t.

It means we have

h=-16+8t

Now, when the object hits the ground, the height must be zero.

Hence, substitute h = 0 in the above equation

0=-16+8t\\\\8t=16\\\\t=2

Therefore, it will take 2 seconds to hit the ground.

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