A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Which equation would best help solve the following problem? Hideki throws a baseball ball upward with an initial velocity of 12 m/s. When he throws the ball, it is 2 m above the ground. How long will it take the ball to hit the ground? a. –16t2+ 12t + 2 = 0 b. –4.9t2 + 12t + 2 = 0 c. –4.9t2 + 12t = 2 d. 4.9t2 + 12t + 2 = 0

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @mathmate

  2. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Michele_Laino

  3. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    The general equation is \[\Large h = -\frac{g}{2}t^2 + v*t + s\] h = height at time t g = acceleration of gravity (g = 9.8 m/s^2 approximately) v = initial velocity s = initial height

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I need an example of this.... I don't understand

  5. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok let's say initial velocity is v = 10 m/s initial height is s = 12 m that would mean the height equation is \[\Large h = -\frac{g}{2}t^2 + v*t + s\] \[\Large h = -\frac{9.8}{2}t^2 + 10t + 12\] \[\Large h = -4.9t^2 + 10t + 12\]

  6. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    solving h(t) = 0 will give you the time values when the object is on the ground

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

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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.