Velocity Calculator
Inputs
Enter parameters to calculate Velocity, Distance, or Time.
Understanding Velocity
Velocity is a vector quantity that signifies the rate of change of position of an object. In simple terms, it's how fast an object is moving in a specific direction.
While "speed" and "velocity" are often used interchangeably in everyday language, in physics, velocity includes direction. This calculator focuses on the magnitude of average velocity (speed).
The Velocity Formula
The fundamental relationship between distance, velocity, and time is expressed as:
v = d / t- v = Velocity (or Speed)
- d = Distance traveled
- t = Time taken
Common Units
Velocity can be measured in various units depending on the context:
Meters per Second (m/s)
The standard SI unit for physics.
Kilometers per Hour (km/h)
Commonly used for car speeds in most of the world.
Miles per Hour (mph)
Standard speed unit in the US and UK.
Feet per Second (ft/s)
Used in some engineering fields.
Examples
Example 1: Running
A runner completes a 100-meter dash in 10 seconds.
- Distance (d) = 100 m
- Time (t) = 10 s
- Velocity (v) = 100 / 10 = 10 m/s
Example 2: Road Trip
You drive 300 miles in 5 hours.
- Distance (d) = 300 mi
- Time (t) = 5 h
- Velocity (v) = 300 / 5 = 60 mph
Frequently Asked Questions
What is the difference between Speed and Velocity?
Speed is a scalar (magnitude only), while velocity is a vector (magnitude + direction). For example, "60 mph" is speed, but "60 mph North" is velocity.
Can velocity be negative?
Yes. Since velocity includes direction, a negative velocity simply means movement in the opposite direction of the positive reference frame.
How do I convert units?
To convert m/s to km/h, multiply by 3.6. To convert km/h to m/s, divide by 3.6.