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

stengem

A 2g particle moving at 8 m/s makes a perfectly elastic head-on collision with a 1g particle at rest. Find the speed of the 2 g particle after collision.

  • 2 years ago
  • 2 years ago

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

    The smaller body will be sent off at 10.67 m/s and the larger body will reduce to 2.67 m/s

    • 2 years ago
  2. sunkenpirate
    Best Response
    You've already chosen the best response.
    Medals 3

    Assume A to be larger body and B to be smaller body. Let u be velocities before impact and v be velocities after impact. Now, by principle of conservation of momentum \[m_{a} * u_{a} +m_{b} * u_{b} = m_{a} * v_{a} +m_{b} * v_{b}\] and for perfectly elastic collision \[u_{a} + v_{a} = u_{b} + v_{b}\] Here, \[u_{b} = 0\] and \[u_{a} = 8 m/s\] Solving, you'll get two equations which give \[v_{a} = 2.667 m/s\] and \[v_{b} = 10.667 m/s\]

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

    U can use this equation for the 2g particle: V(final)=(M'-M)V(initial)/M'+M V(final)=(2-1)*8/2+1=8/3m/s for the other u can use V(final)=2M'V/M'+M V(final)=2*2*8/2+1=32/3m/s

    • 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.