anonymous
  • anonymous
A juggler throws a ball from an initial height of 4 feet with an initial vertical velocity of 30 feet per second. The height h (in feet) of the ball can be modeled by h = –16t2 + vt + s, where t is the time (in seconds) the ball has been in the air, v is the initial velocity (in feet per second), and s is the initial height.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
Write an equation that gives the height (in feet) of the ball as a function of the time (in seconds) since it left the juggler’s hand.
anonymous
  • anonymous
If the juggler misses the ball, after how many seconds does it hit the ground?
Hero
  • Hero
hint: s = 4, v = 30

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More answers

anonymous
  • anonymous
2/15 Sec ?
Hero
  • Hero
2nd hint: The height will be zero when it hits the ground
Hero
  • Hero
Let me see if that is correct
anonymous
  • anonymous
Okay.
Hero
  • Hero
I get t = 2 secs
Hero
  • Hero
I will post the full steps
anonymous
  • anonymous
I was thinking 4, lol. Looks like i was off by 2.
anonymous
  • anonymous
Wanna join in @eyad ??
Hero
  • Hero
h = -16t^2 + 30t + 4 0 = -16t^2 + 30t + 4 16t^2 - 30t - 4 = 0 2(8t^2 - 15t - 2) = 0 8t^2 - 15t - 2 = 0 8t^2 - 16t + t - 2 = 0 8t(t-2)+1(t-2) = 0 (t - 2)(8t + 1) = 0 t - 2 = 0 8t + 1 = 0 t = 2 only
anonymous
  • anonymous
Yup . It's 2.
Hero
  • Hero
How do you know?
Hero
  • Hero
Is the answer in the back of the book?
anonymous
  • anonymous
Nope . But i based it on an example that was in my math book.
Hero
  • Hero
standby, I have to verify this answer.
Hero
  • Hero
I just verified that my setup is correct, so that means the answer is also correct.
anonymous
  • anonymous
Yay!
Hero
  • Hero
I see. What chapter are you on?
anonymous
  • anonymous
9.. About to be on 10.
Hero
  • Hero
Nice. Making huge progress I see.
anonymous
  • anonymous
Yup !!! :) I'm ready to finish .
Hero
  • Hero
I know you are :D
anonymous
  • anonymous
I gotta finish some homework. Ttyl

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