Plane vector operations

Overview

Vector addition (parallelogram rule) and scalar multiplication.

Explanation

A plane vector has magnitude and direction.
Addition: parallelogram or tip-to-tail — a + b ends where the chain ends.
Scalar: |ka| = |k|·|a|; k > 0 same direction, k < 0 opposite.

How to use

Drag tips of a and b; adjust scalar k for ka.

Knowledge points

• Vectors
• High school