Two vectors A and B are equal if they have the same magnitude and the same direction . this property allows us to translate a vector parallel to itself in a diagram without affecting the vector . In fact , for most purposes, any vector can be moved parallel to itself without being affected .
can you give me an example of that point
When two or more vectors are added , they must all have the same units . It would be meaningless to add a velocity cector to a displacement vector .
what that mean ?