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Karolina [17]
3 years ago
15

A ball is thrown into the air with an upward velocity of 80 feet per second. The function

Mathematics
2 answers:
Ghella [55]3 years ago
5 0
After 5 seconds, that is the answer.
klemol [59]3 years ago
5 0

Answer:

5 seconds

B is correct

Step-by-step explanation:

h(t)=-16t^2+80t

where, t is time in seconds, h is height of ball in feet

When ball at ground h must be 0.

Set h=0 and solve for t

0=-16t^2+80t

-16t(t-5)=0

t=0,t-5=0

t=0,5

Hence, The ball reach at ground in 5 seconds

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