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

cutie.patootie Group Title

A 5.5 kg bowling ball initially at rest is dropped from the top of a 12 m building. It hits the ground 1.75 s later. Find the net external force on the falling ball.

  • one year ago
  • one year ago

  • This Question is Closed
  1. yrelhan4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    s=1/2at^2 you have s and t find a. net force=ma. plug and solve.

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

    What is s?

    • one year ago
  3. yrelhan4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    s-->distance travelled a--> acceleration due to gravity here t-->time taken

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

    Okay, thanks:)

    • one year ago
  5. yrelhan4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    cheers!

    • one year ago
  6. cutie.patootie Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I 431.2N but that isn't an option..

    • one year ago
  7. yrelhan4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    43.12 N is the answer.

    • one year ago
  8. cutie.patootie Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    So this is what I did.. s=12m a=? t=1.75s 12=((1.75)^2a)/2 12=(3.0625a)/2 24=3.0625a a=7.84 netforce=55*7.84 netforce=431.2N

    • one year ago
  9. yrelhan4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Net acceleration. a = 2*12/1.75² Net force ma = 5.5* 2*12/1.75² = 43.12 N

    • one year ago
  10. cutie.patootie Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I get what your saying now. But the only problem is my choices are 120N, 54N, & 0N. But I can rule out 0N automatically

    • one year ago
  11. yrelhan4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    hmm. no idea. sorry.

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

    Its okay, thanks for your help though :) I really do appreciate it

    • one year ago
  13. yrelhan4 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    you're welcome. good luck. :)

    • 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.