View Single Post
Aug29-08, 01:28 PM
Sci Advisor
HW Helper
tiny-tim's Avatar
P: 26,148
Quote Quote by i_island0 View Post
Elastic collision is one in which translation Kinetic energy is conserved. IF during collision, some portion of energy is converted into vibrational or even rotational KE, then such a collision cannot be called elastic.
Hi i_island0!

I don't think I agree with that "elastic" simply means that kinetic energy is conserved, and rotational KE is included.

Of course, "elastic" isn't a word like "newton" that has an internationally recognised definition it's just a customary word but I'm pretty sure the people who set exams use it to include all KE.

hmm on the other hand, you were right the last time

so if you have any quotation to back up your claim, let's see it!