SOLUTION: An object is projected directly upward from the ground. After t seconds its distance in feet above the ground is given by h(t) = -16t^2 + 160t. a. How high is the projectile af

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Question 1114773: An object is projected directly upward from the ground. After t seconds its distance in feet
above the ground is given by h(t) = -16t^2 + 160t.
a. How high is the projectile after 5 seconds?
b. At what time(s) is the projectile 110 feet from the ground?

Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!

a. How high is the projectile after seconds?
....plug in for



feet from the ground

b. At what time(s) is the projectile feet from the ground?
....plug in for
...solve for
....use quadratic formula







seconds
and
seconds

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