So how do we go about quantifying this linear motion?

Just like there is the momentum principle for linear motion, there is also the angular momentum principle.

This transforms rotating motion into linear motion.

The similarity of this time function for rotary motion with the time function for linear motion [Psychol.

At a random point on a linear motion trajectory, the sound source would deviate from its initial path and speed.

Instead of batteries, the sensors capture energy from their surroundings using a combination of solar cells, thermal and linear motion converters.

Shape memory materials are good candidates for linear motion in soft robotics, able to move back and forth like your bicep muscle.