A vector is represented by an arrow. The length of the arrow represents its magnitude, and the direction of the arrow represents its direction.
Resultant- combined effect of 2 vectors.
If 2 vectors are in a straight line- going in the same direction- add them.
If 2 vectors are in a straight line- going in opposite directions- subtract them.
Adding vectors which are not in a straight line
2 ways – the triangle law and the parallelogram law.
2 vectors must run into each other, nose of vector 1 to tail of vector 2. The 3rd side of the triangle that they form is the resultant.
the two vectors represents the two side of a triangle and the sum of two vectors is the thierd side of the triangle.
for more reference read :
NCERT statics and dynamics
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