Vector Question: Solved - Learn What to Look For

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Vectors can indeed have units, particularly when they represent physical quantities like force, which is measured in Newtons (N). Unit vectors themselves do not have units, but they are often used to express the direction of a vector that does have units. In the context of the problem involving a 1.38 kg box, the force acting on it is expressed in Newtons, and thus the second force should also be in units of N. The discussion clarifies that while unit vectors are dimensionless, the vectors they represent can carry physical units. Understanding this distinction is crucial for correctly solving physics problems involving vectors.
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[SOLVED] Vector Question

Im doing my homework online because that's where it needs to be done. For answers with unit vector notation in them, I thought that vectors didnt have units. When I put them into the program and select these don't have units...they get marked wrong. Do they have units?
 
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A unit vector is different from a physical unit. Certainly a vector can have a physical unit attached to it. For instance a force is a vector quantity and as you may know, force is measured in units of Newtons (N).
 
There are two forces on the 1.38 kg box in the overhead view of Fig. 5-31 but only one is shown. For F1 = 18.4 N, a = 13.6 m/s2, and θ = 29.2°, find the second force (a) in unit-vector notation. So would the units for A be N??
 
By the way. I am not asking the problem to be done...I just need units
 

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