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phys: area below graph is *change* in velocity

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eggy 2020-10-02 13:10:48 -04:00
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@ -286,7 +286,7 @@ The area below a velocity-time graph at a given time is equal to the displacemen
An **acceleration-time graph** is similar to a velocity-time graph but replaces the velocity on the vertical axis with an object's acceleration instead. An **acceleration-time graph** is similar to a velocity-time graph but replaces the velocity on the vertical axis with an object's acceleration instead.
The area below an acceleration-time graph at a given time is equal to the velocity at that time. The area below an acceleration-time graph at a given time is equal to the change in velocity at that time.
!!! note !!! note
If there is any instantaneous jump on a position-, velocity-, or acceleration-time graph (which is impossible in reality but may be used to simplify matters), a dashed line must be used to connect the two sides to ensure that the line remains a function. If there is any instantaneous jump on a position-, velocity-, or acceleration-time graph (which is impossible in reality but may be used to simplify matters), a dashed line must be used to connect the two sides to ensure that the line remains a function.