As i was typing out "but its the only thing i was given" i realized i totally forgot about the first vector set. So the correct thing to do would be to multiply the <-1,-2,3> by 2, and then take the magnitude of that? Sorry for the original post I am under a lot of stress as its a sort of pop...
Homework Statement
Givens:
An object with a mass of 2kg has a momentum of p=<-1,-2,3>. The first two questions asked for the magnitude of the momentum and the corresponding unit vector, which i found to be 3.74 and <-0.267,-0.535,0.802> respectively. The next question asks for the speed of the...