Question

In a certain collision between two cars, the cars end up sticking together. Can we conclude that the collision is completely inelastic? explain.

Answer 1

an inelastic collision is one where kinetic energy is not conserved

Answer 2

helll no depends upon two things the mass and weight third law of motion to every action theres an equal and opposite reaction

Answer 3

Inelastic collisions do not conserve KE.

Answer 4

MY GOD I NINJA'D ALL OF YOU HA

Answer 5

@bloopman Got too it first

Answer 6

yeah i know, but there's inelastic and COMPLETELY inelastic collision, in which the kinetic energy is decreased at maximum..
so since the cars stick together after the collision, does it mean it is Completely inelastic or just elastic?

Answer 7

Completely inelastic.

Answer 8

inealstic at end but for short interval of time it will be elastic take the case when one car rolls back beacuse of collision than it will be elastic till the car is moving but at the end it will be inelastic

Answer 9

oh okay, thanks :)

i have one more...

Why is head-on vehicle collisions are usually more dangerous than other types of collision?
(I need to use physics principles to explain)

Answer 10

depends on the kind of vehicle u have ?

Answer 11

the law of inertia

Answer 12

@donmath that doesn't play a factor in this situation. A head-on collision will abruptly stop a moving vehicle, meaning that it loses it's KE almost instantly. However, the objects within the vehicle will still have the same amount of energy as the car once did.

Answer 13

@donmath, do you even know what you're talking about? o.O

Answer 14

when body is in motion wants to saty in motion during an head on collision the car stops the body is in motion so we get a jerk in front bouncing of from seat and the flying particles in our eyes and other body parts

Answer 15

lol if the car doesnt have airbags than *doing gangnam style *

Answer 16

@donmath I believe we've all addressed donmath's ignorance. Newton's law states: "objects in motion tend to stay in motion".

Answer 17

thanks to all ^_^

Answer 18

but who gave u the specific one not a competion but just out of curiosity