Question

Define acceleration ​

Answer 1

in short...,

increase in speed or rate.

In long....

In mechanics, acceleration is the rate of change of the velocity of an object with respect to time. Accelerations are vector quantities. The orientation of an object's acceleration is given by the orientation of the net force acting on that object.

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Answer 2

Answer:

Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity.An object is accelerating if its changing its velocity

An example of acceleration is increasing your driving speed from 45 to 55 to merge with traffic

SI unit of acceleration is metres per second