Velocity
Velocity
Velocity (/vəˈlɒsɪti/; from Latin velocitas, meaning 'swiftness, speed') is a fundamental concept in the field of physics. It is defined as the rate of change of displacement with respect to time. Velocity is a vector quantity, which means it has both magnitude and direction.
Definition
In physics, velocity is defined as the rate of change of an object's position with respect to a frame of reference, and is a function of time. The scalar absolute value (magnitude) of velocity is called speed, being a coherent derived unit whose quantity is measured in the SI (metric system) as metres per second (m/s) or as the SI base unit of (m⋅s−1).
Types of Velocity
There are two types of velocity: average velocity and instantaneous velocity. Average velocity is the total displacement divided by the total time. Instantaneous velocity is the velocity of an object in motion at a specific point in time.
Calculating Velocity
Velocity is calculated by dividing the total displacement by the total time. The formula for velocity is:
v = Δs / Δt
where:
- v is the velocity,
- Δs is the change in position (displacement), and
- Δt is the change in time.
Related Terms
- Acceleration: The rate of change of velocity per unit of time.
- Momentum: The product of the mass and velocity of an object.
- Speed: The magnitude of velocity without its direction.
See Also
References
External Links
External links
- Medical encyclopedia article on Velocity
- Wikipedia's article - Velocity
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