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 object, which is where i am having trouble. Ive looked everywhere for how to determine the speed of an object from its unit vector and cannot seem to find an answer. I believe im either overlooking something simple or am simply missing a vital piece of information.