February 27, 2017

Homework Help: physics

Posted by Tammy on Wednesday, October 24, 2007 at 5:05pm.

A 5kg object moves to the right with a speed of 2m/s. It collides in a perfectly elastic collision with a 2 kg object moving to the left at 5m/s.What is the total kinetic energy after the collision?

In elastic collisions KE is conserved so KE_i =KE_f
KE_f=1/2(5)(2)^2+ 1/2(2)(5)^2
=35 J
Is this correct?

Answer This Question

First Name:
School Subject:

Related Questions

More Related Questions