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

ksaimouli Group Title

Two objects of masses 10kg and 20kg have velocities v1 = 20m/s and v2 = 10m/s, on a collison course, as shown below. If 1500J of kinetic energy is lost in the plastic collision and the objects move on a frictionless surface, what is the momentum of the two objects after the plastic collision?

  • one year ago
  • one year ago

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

    @Callisto

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

    momentum WILL REMAIN conserved. p=m1v1+m2v2 Make sure you insert the velocities with their signs.

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

    i know it is conserved what to nexr

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

    For a plastic collision, (m1+m2)Vfinal = m1v1+m2v2 As @Diwakar put it, the signs of v1 and v2 (and Vfinal) are critical. According to the question, both are moving in the same direction. Double check with the figureb that only you can see.

    • 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.