a force that moves something along

To be carried or conveyed, as in a vehicle or on horseback, To move by way of an intangible force or impetus; move as if on water, To sit on and control the movement of, noun_ The act or an instance of riding, as in a vehicle or on an animal, A device, such as one at an amusement park, that one rides for pleasure or excitement, A means of transportation

The force or energy exhibited by a moving body, the product of a body's mass and its velocity, The impetus, either of a body in motion, or of an idea or course of events. (i.e_ a moment)

A space of time incalculably or indefinitely small, Momentum; impetus; moving cause; impelling force or occasion, Importance, as in influence or effect; consequence; weight or value; consideration