1. Vector Notation. example: <2 m, 33 m, -8 m>
2. Distance and Angle. example: 15 meters at 30o North of East
3. ?
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Consider an equilateral triangle. If each vector started at the center of the triangle and went through a different vertex than the other two vectors then they would cancel. I believe in order for them to add to a null vector they must be co-planer.
Two vectors, no; three vectors yes.
It is a three dimension vector : (x, y, z). It could be either a row vector or a column vector.
Yes. A vector in two dimensions is broken into two components, a vector in three dimensions broken into three components, etc... If the value of all but one component of a vector equal zero then the magnitude of the vector is equal to the non-zero component.
the three kinds of variables are independent,dependent and controlled