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

abdul_shabeer Group Title

A body of mass M collides against a wall with velocity V and rebounds with the same speed. It's change of momentum is

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. Aadarsh Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    No Change as such

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

    momentum= mass*velocity both remain same after collision so no change in momentum.

    • 2 years ago
  3. abdul_shabeer Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Answer is given as 2MV

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

    But how? Are we to add both the momenta?

    • 2 years ago
  5. salini Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    adarsh see the direction change as well first it is +v next it is -v

    • 2 years ago
  6. Aadarsh Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Okay. yeah, got it. First, Its MV. Second is -MV. Subtracting, we get 2MV.

    • 2 years ago
  7. abdul_shabeer Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    By subtracting how we get 2MV

    • 2 years ago
  8. Aadarsh Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    But I don't understand why the sign is +ive in first case and -ive in second case.

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

    See, MV - ( - MV) = MV + MV = 2MV(Simple integer addition)

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

    Can anyone say about the signs?

    • 2 years ago
  11. salini Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    |dw:1329838538143:dw|because we shud maintain a standard sign system like think this way

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

    So, in all physics problems requiring direction, we need to follow Cartesian System, rite?

    • 2 years ago
  13. salini Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    yeah there is more than that for that u need to come to 11th for now understand that when it is a 1-dimensuional(straight line motion) follow the co-ordinate axes

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

    Ok. Thanks.

    • 2 years 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.