A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Summersnow8

  • one year ago

Ball A of mass 0.55 kg has a velocity of 0.65 m/s east. It strikes a stationary ball, also of mass 0.55 kg. Ball A deflects off ball B at an angle of 37° north of A's original path. Ball B moves in a line 90° right of the final path of A. Find the momentum (in kg m/s) of Ball A after the collision.

  • This Question is Closed
  1. ivancsc1996
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Is there a picture you can supply? If ball B moves 37° north from the east, and 90° right of the final path of A, A must move 127° north from the east, that is in the north west direction. But the both A's and B's momenta would have a positive component in the north direction which would violate the law of conservation of momentum since at the beginning there was no component of momentum going north.

  2. rajat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ivancsc1996 is right

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

    This is my understanding, that A is the one deflected north and B is 90° right/clockwise of the deflection. |dw:1437222224101:dw|

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

    The we can show momentum conservation in the horizontal and vertical directions. Horizontal: \(m_av_a=m_av'_a \cos(37°) + m_bv'_b \cos(-53°)\) Vertical: \(0=m_av'_a \sin(37°) + m_bv'_b \sin(-53°)\) The masses are the same, so they cancel and you're left with this system of equations \[0.65~ m/s = v'_a \cos 37° + v'_b \cos (-53°)\] \[0 = v'_a \sin 37° + v'_b \sin (-53°)\]

  5. 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.