Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

burhan101 Group Title

Velocity = 9t²-81t+162 At what time,t, is the velocity not changing?

  • one year ago
  • one year ago

  • This Question is Closed
  1. ganeshie8 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    find its vertex

    • one year ago
  2. julian25 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    but really the velocity is not changing there?

    • one year ago
  3. ganeshie8 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1371752495017:dw|

    • one year ago
  4. burhan101 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    0= 9t²-81t+162 ? @ganeshie8

    • one year ago
  5. julian25 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    yes the rate of change there is 0

    • one year ago
  6. ganeshie8 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @burhan101 look up formula for "vertex of parabola"

    • one year ago
  7. ganeshie8 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    vertex occurs at \(\frac{-b}{2a}\)

    • one year ago
  8. ganeshie8 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    a = 9 b = -81 just plugin

    • one year ago
  9. burhan101 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    x=9/2

    • one year ago
  10. ganeshie8 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    correct ! thats the time when verlocity becomes 0

    • one year ago
  11. ganeshie8 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    *velocity

    • one year ago
  12. burhan101 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    4.5

    • one year ago
    • Attachments:

See more questions >>>

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.