Recent content by KoaDcT

Ah, I found my mistake right after I posted. Now my final answer is V1' = -5.9 m/s, and V2' = 2.5 m/s. I think that is the right answer. Thanks for the help :)

I don't really understand what you said in the brackets, do you mean if the initial velocity is positive, then the answer must be negative after collision? I also have another problem with this question. In my solution I substituted "V2' = -V1' - 3.4", so if V1' is equal to -2.5 m/s then V2'...

Homework Statement The problem is pretty simple, however I don't understand which value to use after using quad formula to solve. See below. V1(initial) = 2.5 m/s V2(Initial) = -5.9 m/s A pool ball moving with a speed of 2.5 m/s makes an elastic head-on collision with an identical ball...