Zenmo
  • Zenmo
Find a unit vector in the direction of the given vector. Verify that the result has a magnitude of 1. W=4j
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
need help
jim_thompson5910
  • jim_thompson5910
W = 4j = 0i + 4j Anything of the form W = ai + bj has the magnitude |W| = sqrt(a^2 + b^2) The unit vector of W will be (1/|W|)*W this vector will be of length 1 and it will point in the same direction as W
anonymous
  • anonymous
thats kind of hard

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Zenmo
  • Zenmo
I still don't understand. :/
jim_thompson5910
  • jim_thompson5910
do you see how 0i + 4j matches up with ai + bj making a = 0 b = 4
Zenmo
  • Zenmo
|dw:1433802189666:dw|
Zenmo
  • Zenmo
yea, I can see 0i+4j=ai+bj making a=0 and b=4
jim_thompson5910
  • jim_thompson5910
very good, <0,1> or 1j = j
Zenmo
  • Zenmo
Ok. got it now. Thanks! :D
jim_thompson5910
  • jim_thompson5910
yw

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