M1.2 - Vectors in mechanics

Magnitude and direction of a Students may be required to resolve a vector into two vector.; Resultant of vectors may components or use a vector diagram.; Questions may be set also be required. involving the unit vectors i and j.

Use magnitude and direction to connect the rule to the data and decision in the question.

This matters because magnitude and direction determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply magnitude and direction to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: Magnitude and direction is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.

Application of vectors to Use of displacements, velocities, change of displacement accelerations and forces in a plane. velocity = in the case of constant time change of velocity velocity, and of acceleration = in the time case of constant acceleration, will be required.

Use application of vectors to connect the rule to the data and decision in the question.

This matters because application of vectors determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply application of vectors to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: Application of vectors is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.