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Sharon kicks a ball from the ground into the air with an upward velocity of 64 feet per second. The function h = -16t2 + 64t models the height h, in feet, of the ball at time t, in seconds. When will the ball reach the ground again?

a. 1 second after the ball is thrown
b. 2 seconds after the ball is thrown
c. 3 seconds after the ball is thrown
d. 4 seconds after the ball is thrown

Respuesta :

sqdancefan

Answer:

  d.  4 seconds after the ball is kicked

Step-by-step explanation:

The height function can be factored as ...

  h = -16t(t -4)

The values of t where h = 0 are 0 and 4.

The ball will reach the ground again 4 seconds after it is kicked.

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Answer:

D

Step-by-step explanation:

four seconds after the ball was thrown

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