Newton’s First Law

An object at rest will stay at rest while an object in motion will stay in motion unless acted on by an external force.

Vinculum

Most commonly the horizontal line above the repetend in a decimal.

Previously, it was used to indicate a group of terms in a mathematical expression. This has been replaced with parentheses.

Repetend: a repeated number or series of numbers; similarly, it is also means a repeated word or phrase.