By solving a quadratic equation, we will see that the ball hits the ground after 2.6 seconds.
<h3>How long does it take for the ball to hit the ground?</h3>
Here we need to solve the equation:
h(t) = 0 = -16t² + 40t + 4
This represents that the ball hits the ground.
So we just need to solve that quadratic equation, using the general formula we get:
We only care for the positive solution, which is:
t = (-40 - 43.1)/-32 = 2.6s
So the ball hits the ground after 2.6 seconds.
If you want to learn more about quadratic equations:
brainly.com/question/1214333
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Answer:
B
Step-by-step explanation:
1. Let the side length of the foundation be x.
2. The area of any square-shaped region = area of square = side length squared.
3. So
take square root of both sides, to isolate x:
(ft)
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