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# Vector Questions and Answers (Q&A)

Marcbrunssen
Volume

Area is a vector; the direction of an area is perpendicular to the surface. So A is incorrect. Weight is a vector. It is a type of force; the direction of the force is downward on...Read More
Sciencegoddess
E

If the head-to-tail method (sometimes referred to as the triangle method) is being used, then the tail of B should be drawn starting at the head of A. Both diagrams D and E show this....Read More
Marcbrunssen
10km

The above graph shows the person walking. The red vector is the sum of the three blue vectors and we are looking for its magnitude. We can calculate the magnitude by...Read More
Sciencegoddess
Head of B, tail of A

Adding vector B to vector A is equivalent to saying A + B. In such an instance, A is drawn first, then B is drawn with its tail at the head of A. Finally, the resultant...Read More
Sciencegoddess
30.8

These two vectors are directed at right angles to each other. In such instances, the vector sum can be determined using the Pythagorean theorem. The resultant (R) is equal to the...Read More
Marcbrunssen
4.2 m/s to the southwest

The change of velocity is equal to the final velocity subtracted by the initial velocity, which is equal to the final velocity add the negative initial...Read More
Marcbrunssen
We can see in the graph that the horizontal component is the adjacent side of the 60 degree angle, so we can use cosine and the vertical component is the opposite side of the 60 degree angle, so we...Read More
Sciencegoddess
Diagram B

The subtraction of A from B is equivalent to adding the negative of A to B. That is, B - A = B + (-A). The negative of a vector is simply the same vector drawn in the opposite...Read More
Ssamreth
30.8

These two vectors are directed at right angles to each other. In such instances, the vector sum can be determined using the Pythagorean theorem. The resultant (R) is equal to the...Read More
John Smith  