Ok so this is just a small understanding problem, I do not want you to actually help me solve the problem, here it goes:
A cylinder with mass 3kg slides on ice with its base surface at 5m/s and collides with an identical but stationary cylinder. The collision is elastic. After the collision, the center-masses of the cylinders move at angles 45 and 30 degrees from the starting direction, What is the rotational energy of the first cylinder?
Ok so the problem I am having here is that I cannot picture it and that is why I am asking here as there is no sketch in the book. I do not understand how the angles are set up.
I made a picture and uploaded it to imgur but i cannot put it on this site for some reason.
htt p://i .imgur. com/mXYFaDV .png
this is the link, delete the spaces. Are any of these options correct?