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What is the length of a straight line from the starting point to the ending point and the direction of movement?
It could be a displacement vector.
What is meant by rectangular unit vector?
A unit vector has a length (magnitude) equal to 1 (one unit). A rectangular vector is a coordinate vector specified by components that define a rectangle (or rectangular prism in three dimensions, and similar shapes in greater dimensions). The starting point and terminal point of the vector lie at opposite ends of the rectangle (or prism, etc.).
What is the result if you subtract a velocity vector to another velocity vector?
The result will also be a velocity vector. Draw the first vector. From its tip draw the negative of the second vector ( ie a vector with the same magnitude but opposite direction). The the resultant would be the vector with the same starting point as the first vector and the same endpoint as the second. If the two vectors are equal but opposite, you end up with the null velocity vector.
How does the distance moved by an object between its starting point and ending point compare to the displacement vector between the same points?
grravity or some other force moves it
If you are given the magnitude of a vector but no directionhow can you represent this vector graphically?
You cannot, unless it is a null vector. As a point.
