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# What is the equation for velocity?

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### Quick Answer

**The equation for velocity is displacement divided by time.** The equations for speed and velocity are similar, but velocity must always have direction, whereas speed does not.

While speed is a measure of how fast something is moving, velocity is a measure of the rate an object changes its position. Distance is a measure of how far something is, while displacement is a measure of the shortest distance between an object's start point and its end point. For example, a runner who ran 400 meters around a track travelled a distance of 400 meters. However, he has a displacement of 0 because he ended up at the same place he started.

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## What is the difference between acceleration and deceleration?

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Full Answer >**Acceleration refers to the change in velocity of a moving object within a certain period of time, either to a slower or faster pace, while deceleration exclusively refers to the negative acceleration (or slowing down) of an object.**In layman's terms, acceleration usually only refers to positive acceleration.Filed Under: -
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## What is the free-fall equation?

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Full Answer >**The equation to calculate a free-falling object's velocity or time spent falling is velocity equals gravitational acceleration multiplied by time.**This occurs if three conditions are given: an initial velocity of zero, a hypothetical infinite space to fall in and negligible air resistance.Filed Under: -
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## How is speed calculated?

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Full Answer >**Speed is also known as velocity, and it is calculated by dividing the distance traveled by the amount of time it took to cover that distance.**This is expressed as a standard equation: V = D / T.Filed Under: -
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## What is the tangential component of acceleration?

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Full Answer >**The tangential acceleration of a body is the rate of change of the tangential component of the velocity of the body with time.**For a body to have tangential acceleration, it needs to be moving in an angular path. The notion of tangential acceleration is closely related to the notions of angular velocity, displacement, and momentum.Filed Under: