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📘 How to Read Velocity-Time Graphs

Time on x, velocity on y.

4
lessons
~20 min
to learn
Adults
level
Start the course →

What you’ll learn

  1. AxesLabel a velocity-time graph with time on the horizontal axis and velocity on the vertical axis.The graph shows velocity change; position information lives in the signed area under the curve.
  2. SlopeCompute acceleration as rise over run on a velocity-time graph.Slope is change in velocity divided by change in time; zero slope means zero acceleration.
  3. AreaFind displacement from signed area under a velocity-time graph.Areas above the time axis are positive displacement; areas below are negative.
  4. StoryTranslate graph segments into a motion story with direction changes.Crossing zero velocity can mark a direction reversal; slope still gives acceleration.

Questions this course answers

What does crossing zero velocity indicate?

The sign of velocity changes at the crossing.

What does a horizontal line mean?

Velocity is unchanged when slope is zero.

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