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| 3.1 What is acceleration? |
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The area under the v/t curve coincides with the displacement of the moving body.  A body accelerates when its velocity varies. If the velocity decreases, we say that it is a decelerating movement, or that it has negative acceleration. The body in the visual is accelerating.
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To calculate the acceleration of a body over an interval of time, (t-t0) you divide the variation in velocity by that time.
Given that acceleration is a quotient relating velocity and time, its SI units are m/s2.
