Posted by ami on Sunday, August 22, 2010 at 6:38pm.
The components of a vector V can be written (Vx, Vy, Vz).
What are the components and length of a vector which is the sum of the two vectors, V1 and V2, whose components are (5.0, 1.3, 15.0) and (2.3, 4.7, 1.0)?

PHY  drwls, Sunday, August 22, 2010 at 6:52pm
Add the components for the vector sum
You get (7.3, 3.4, 16.0)
The length of any vector is the square root of the sum of the squares of the components.

PHY  Damon, Sunday, August 22, 2010 at 6:53pm
Vx = 5.0+2.3
Vy = 1.34.7
Vz = 16
length = sqrt (Vx^2+Vy^2+Vz^2)
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