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Topic review (newest first)
Magnitude is always a positive. A scalar is any number. It can be positive or negative.
The magnitude is 10 meters.
Say x=10 metres: is the magnitude of x 10 or 10 metres? I believe the latter is true.
|F| is the norm or Euclidean distance from the origin of the vector F,
There are other types of norms.
What is A unit?