to the right. Treat acceleration as a vector when there is another vector quantity, such as velocity or force, involved in a question. Forces need a size and direction, eg \(300 N\) to the left.

The diagram above represents a vector. The arrow displays its direction, hence this vector can be written as \(\overrightarrow {AB}\), a, or \(\begin{pmatrix} 3 \\ 4 \end{pmatrix}\). In print ...