In the head-to-tail rule, the resultant is drawn from:

A correct analysis gives Tail of first to head of last when magnitude, direction, units and conditions are considered. The question tests wh...

A correct analysis gives Tail of first to head of last when magnitude, direction, units and conditions are considered. The question tests whether the learner can distinguish the required quantity from related ideas and use the stated information without adding unsupported assumptions. The alternatives Head of first to tail of last, Tail of last to head of first, and Origin to origin do not satisfy the governing definition, graph interpretation, direction convention, or numerical relationship in this case. In examinations, identify the known quantities, keep SI units consistent, select a positive direction where needed, and apply the appropriate definition or equation. This also checks that the answer has a sensible magnitude and unit.