Belonging to a Line Crossword Clue

Belonging to a line crossword clue. A quick one crossword question in Daily Telegraph Sydney on Tuesday, 11 July 2017. 6 letters.

The answer: LINEAR

Linear motion also called rectilinear motion is a motion along a straight line, and can therefore be described mathematically using only one spatial dimension. The linear motion can be of two types: uniform linear motion with constant velocity or zero acceleration; non uniform linear motion with variable velocity or non-zero acceleration. The motion of a particle (a point-like object) along a line can be described by its position x, which varies with t (time). An example of linear motion is an athlete running 100m along a straight track.

Linear motion is the most basic of all motion. According to Newton’s first law of motion, objects that do not experience any net force will continue to move in a straight line with a constant velocity until they are subjected to a net force.