Velocity Calculator
Calculate velocity, distance, or time using the basic kinematic equation v = d/t.
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FAQs
What is the difference between velocity and speed?
Speed is a scalar — it has magnitude only (e.g. 60 km/h). Velocity is a vector — it has both magnitude and direction (e.g. 60 km/h due north). In everyday language they are often used interchangeably, but in physics the distinction matters when direction changes are involved.
What is acceleration?
Acceleration is the rate of change of velocity — how quickly velocity changes over time: a = Δv/Δt. A car going from 0 to 100 km/h in 10 seconds has an average acceleration of 10 km/h per second ≈ 2.78 m/s². Deceleration (braking) is negative acceleration.
What is average velocity vs instantaneous velocity?
Average velocity is total displacement divided by total time — what this calculator computes. Instantaneous velocity is velocity at a specific moment, found using calculus (the derivative of position with respect to time). A speedometer shows instantaneous speed.