Velocity /(?)/
Ve·loc·i·ty
Velocity
n.
pl. Velocities
- Quickness of motion; swiftness; speed; celerity; rapidity; as, the velocity of wind; the velocity of a planet or comet in its orbit or course; the velocity of a cannon ball; the velocity of light.
- Rate of motion; the relation of motion to time, measured by the number of units of space passed over by a moving body or point in a unit of time, usually the number of feet passed over in a second. See the Note under Speed. (Mech.)
Phrases & Compounds
- Angular velocity
- See under Angular.
- Initial velocity
- the velocity of a moving body at starting; especially, the velocity of a projectile as it leaves the mouth of a firearm from which it is discharged.
- Relative velocity
- the velocity with which a body approaches or recedes from another body, whether both are moving or only one.
- Uniform velocity
- velocity in which the same number of units of space are described in each successive unit of time.
- Variable velocity
- velocity in which the space described varies from instant to instant, either increasing or decreasing; -- in the former case called accelerated velocity, in the latter, retarded velocity; the acceleration or retardation itself being also either uniform or variable.
- Virtual velocity
- See under Virtual.