Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions



This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
   Let two bodies of masses  M and m travel with velocities  U and u before collision.  Let them collide elastically. so energy is conserved.  Let the potential energy remain same for each of them. Let them travel with  V and v after collision.

  Conservation of linear momentum:
       M U + m u = M V + m v
       M (V - U)  = m (u - v)        --- (1)

change in the momentum of one object is negative of the change in momentum of the other object.

  Conservation of energy :
      1/2 M U² + 1/2 m u² = 1/2 M V² + 1/2 m v²
      M(V² - U²) = m (u² - v²)          --- (2)

  divide  (2) by (1) to get:
       V + U  =  u + v
       V - v   =  - (U  -  u)
   => Relative velocity after collision = relative velocity before collision.

e = coefficient of restitution
  = relative velocity after collision / relative velocity before collision
  = 1

1 5 1
click on thanks button above pls;;select best answer
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts