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# How Do You Calculate Acceleration?

**To calculate acceleration, divide the change in velocity by the total time.** Acceleration values are expressed in units of velocity per time, including meters per second squared.

Acceleration is a vector quantity and is defined as the rate at which an object changes its velocity. Velocity refers to the rate at which an object changes its position. People often use the term acceleration to describe someone or something that is moving at a rapid pace. However, in physics terminology, an object can be moving quickly but not accelerating. In physics, acceleration has nothing to do with speed. This is reflected in the calculation to divide the change in velocity by time, not the change in speed.

Because acceleration is a vector quantity, it must also be associated with a direction. To determine the direction of acceleration, you must first determine whether the object is increasing or decreasing in velocity and whether the object is moving in a positive or negative direction. The positive or negative direction can be determined by a simple graph. Anything to the right or up is positive, while anything to the left or down is negative. A general principle is that if an object is decreasing in velocity, then its acceleration is in the opposite direction of its motion.

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Q:
## What Is the Formula for Acceleration?

A: The formula for acceleration is given as a = (v2 - v1) / (t2 - t1), where "a" denotes the acceleration, "v2" indicates the final velocity, "v1" represents ... Full Answer >Filed Under: -
Q:
## What Is the Free-Fall Equation?

A: The equation to calculate a free-falling object's velocity or time spent falling is velocity equals gravitational acceleration multiplied by time. This occ... Full Answer >Filed Under: -
Q:
## What Is the Definition of Constant Acceleration?

A: Constant acceleration is a change in velocity that doesn't vary over a given length of time. If a car increases its velocity by 20 mph over the course of a... Full Answer >Filed Under: -
Q:
## What Is Deceleration?

A: Deceleration is synonymous with slowing down or is related to the relative directions of velocity and acceleration. The meaning of the word in common langu... Full Answer >Filed Under: