A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Britney throws an object into the air with an initial vertical velocity of 27 ft/s from a platform that is 10 ft above the ground. About how long will it take the object to hit the ground? A. 1 s b. 2 s c. 3 s d. 4 s

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

    @mathmate

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

    @yayah2001 Are you on energy conservation or kinematics? Both will solve the problem, but it's better to work with the one you're studying.

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

    conservation

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

    this is math!

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

    So you're on calculus?

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

    algebra

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

    Do you have the kinematics equation given to you? like: x(t)=vt+(1/2)at^2

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

    I have h(t)=-4.9t^2 + VoT +Ho

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

    x(t)=-10 v=+27 a=-32.2 Solve for t.

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

    That is assuming the ball was thrown vertically \(upwards\)

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

    and reject the negative root from the quadratic equation.

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

    That's the same equation, but the number -4.9 should read -16 or -16.1, because you are working with feet, not metres.

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

    okay, I understand now.

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

    or not

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

    Take your time and post the answer to check if you wish. Please give me the answer to 2 places of decimals, even though you have to round it to an integer later on. Remember to reject the negative root.

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

    I have to change it to a different question because I got a 70%

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

    ok, anyway, the principle is the same.

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

    I really just need the answer. I've tried really hard to get the equation right (I spent 10 minutes on just the one question), so could you possibly go easy on me?

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

    with the new question, of course.

  20. 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.