velocity
Sign in to saveVelocity is a measurement of speed in a certain direction of motion. It is a fundamental concept in kinematics, the branch of classical mechanics that describes the motion of physical objects. Velocity is a vector quantity, meaning that both magnitude and direction are needed to define it (velocity vector). The scalar absolute value (magnitude) of velocity is called , a quantity that is measured in metres per second (m/s or m⋅s−1) in the SI (International System of Units) system. For example, "5 metres per second" is a scalar, whereas "5 metres per second east" is a vector. If there is a chang
AI overview
Velocity measures how fast something is moving in a particular direction, combining both speed and direction into one concept. It matters because it's a fundamental tool scientists and engineers use to describe and predict how physical objects move.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Physical quantity.name
- Velocity
- Physical quantity.image
- US Navy 040501-N-1336S-037 The U.S. Navy sponsored Chevy Monte Carlo NASCAR leads a pack into turn four at California Speedway.jpg
- Physical quantity.image_size
- 260px
- Physical quantity.caption
- As a change of direction occurs while the racing cars turn on the curved track, their velocity is not constant even if their speed is.
- Physical quantity.symbols
- , , ,
- Physical quantity.otherunits
- mph, ft/s
- Physical quantity.baseunits
- m/s
- Physical quantity.dimension
- L T−1
via Wikipedia infobox
Article
25 sectionsContents
- Definition
- Average velocity
- Instantaneous velocity
- Difference between speed and velocity
- Units
- Equation of motion
- Average velocity
- Special cases
- Relationship to acceleration
- Constant acceleration
- Quantities that are dependent on velocity
- Momentum
- Kinetic energy
- Drag (fluid resistance)
- Escape velocity
- The Lorentz factor of special relativity
- Relative velocity
- Scalar velocities
- Coordinate systems
- Cartesian coordinates
- Polar coordinates
- See also
- Notes
- References
- External links
Velocity is a measurement of speed in a certain direction of motion. It is a fundamental concept in kinematics, the branch of classical mechanics that describes the motion of physical objects. Velocity is a vector quantity, meaning that both magnitude and direction are needed to define it (velocity vector). The scalar absolute value (magnitude) of velocity is called , a quantity that is measured in metres per second (m/s or m⋅s−1) in the SI (International System of Units) system. For example, "5 metres per second" is a scalar, whereas "5 metres per second east" is a vector. If there is a change in speed, direction or both, then the object is said to be undergoing an acceleration.
== Definition == === Average velocity === The average velocity of an object over a period of time is its change in position, divided by the duration of the period, given mathematically as \bar{v}=\frac{\Delta s}{\Delta t}.