Question

What is a perfectly inelastic collision?

Answer 1

In a perfectly inelastic collision, the two particles colliding stick together after the collision:
http://en.wikipedia.org/wiki/Inelastic_collision#Perfectly_inelastic_collision

Answer 2

hey i hav a doubt

Answer 3

would two moving cars that run into each other and stick and are still moving be inelastic?

Answer 4

Yes, as per the graphic in the wikipedia article.

Answer 5

u see
i throw mud at the wall the mud sticks on the wall hw is momentum conserved in this collision?

Answer 6

would it be perfectly inelastic?

Answer 7

Momentum is conserved. It's just the the mass of the object being hit--the wall, the building, the earth on which the earth is built--is so very large that you don't observe it moving in response the the mud.

Yes, it would be perfectly inelastic.

Answer 8

my worksheet says that it cant be perfectly inelastic

Answer 9

Which scenario: the cars or the mud?

Answer 10

u mean that m is very large so v is negligible??

Answer 11

Yes.

Answer 12

oh

Answer 13

It says why cant perfectly inelastic be shown on this website
http://www.walter-fendt.de/ph14e/collision.htm

Answer 14

If the two cars collide and after the collision stick together and have the same velocity, then even by the link you've just given, the collision is perfectly inelastic:

"After a perfectly inelastic collision, however, both bodies have the same velocity; the sum of their kinetic energies is reduced, compared with the initial value, because a part of it has changed into internal energy (warming up)."

Answer 15

Heres the question: In class we learned that there are 3 kinds of collisions: Elastic, Inelastic, and Perfectly Inelastic. Which types were demonstrated here? Why was the third type not able to be demonstrated with this website?

Answer 16

Inelastic and Elastic were shown on there

Answer 17

That java plug in is not working for me, so I can't answer "Why was [perfectly inelastic] not able to be demonstrated?" as I can't see what it's doing or what inputs it is asking for.

Answer 18

james can u help in my question

Answer 19

get off my question if your not going to help me. thanks Arav

Answer 20

Brent. After looking at your website, I observe that elastic and perfectly inelastic are being shown. Perfectly inelastic collisions means the object stick together. Imperfect inelastic collions do not stick together, yet kinetic energy is destroyed, unlike in elastic collisions where kinetic energy is conserved.