M1 Help

[Hamzeh S]

when using conversvation of momentum and after the collision i got the direction of one of the particles not the other what shall i do ! if i choose left i will get a different answer than if i choose right

 

[The Urge]

If they only mention the direction of one particle after collision, then you should always take the direction of the second particle after collision to the right..
Try to picture it in your head