Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Matt71

  • 2 years ago

The height, "h" m, of a golf ball at time, "t" s, from the ground is given h=-5t^2+15t. a.) Find the time of flight of the golf ball. **solutions will be appreciated

  • This Question is Closed
  1. apoorvk
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    find the two times when height "h" is zero. equate the equation to zero for that. now the smaller 't' will be the time when the ball was launched and the larger 't' value wil be the time when the ball landed. deduct the two to get the Time Period.

  2. Recursing
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    The ball ends it's flight when it height reaches 0, right? so \[0=-5t^2+15t\]

  3. amistre64
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    i would say there are to many assumptions to be had in order to make a proper determination

  4. Recursing
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    why?

  5. Matt71
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    braaaiiiiiin poop, all I know is it has something to do with a parabola

  6. amistre64
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    |dw:1334427906699:dw|

  7. amistre64
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    |dw:1334427942407:dw|

  8. amistre64
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    mostly terrain issues :)

  9. Matt71
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    That's actually just one of the questions. These are all of them: a)Find the time of flight of the golf ball b)Draw the graph of h=-5t^2+15t during the time of flight c)Find the maximum height of the golf ball from the ground d)when is the golf ball 8m above the ground?

  10. Recursing
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes, but you know the height from the ground, I suppose it's the ground directly beneath the ball.

  11. amistre64
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    like a flyball

  12. Matt71
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So, is there anyway to get an exact answer with the information given?

  13. amistre64
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    cant make it to the hole if you just hit it straight up

  14. Recursing
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    It doesn't have to be straight up.

  15. Recursing
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    You know only the height, you don's know where it is.

  16. amistre64
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    a)Find the time of flight of the golf ball h(t) = 0 b)Draw the graph of h=-5t^2+15t during the time of flight draw an upside down parabola using the zeros found above and the vertex found in "c" c)Find the maximum height of the golf ball from the ground the vertex IS the high point d)when is the golf ball 8m above the ground? when h(t) = 8

  17. apoorvk
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    well ofcourse a lot of assumptions are required, but when nothing's been stated, we take the simplest factors into account, i believe.

  18. Not the answer you are looking for?
    Search for more explanations.

    Search OpenStudy
    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.