this is a momentum question
i have done it this far
u has two components
let them be
i= u x
j= u y then (x2 + y2 )1/2 = 1
so w = uxi + e2 uyj
the to calculate the magnetude of w in terms of u
w = ((ux)2 + (e2 uy)2 )1/2
and i shuffle through this but cannot get the right answer out
plz help me out and tell me where i have gone wrong.
