BRAINCAKEThe Parallelogram Rule
The resultant of two vectors is the diagonal of a parallelogram formed where the sides of the parallelogram are composed from the two vectors.
To use the rule, draw both vectors from the same point (tail to tail), to scale and at the correct angle. Complete the parallelogram by drawing a line parallel to each vector from the tip of the other. The resultant is the diagonal drawn from the common starting point.
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All 31 lessons in Motion · All Edexcel AS-level Physics topics