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Describing motion with Graphs

Describing motion with Graphs. Position vs. Time Graphs. x-axis: Time y-axis: Position slope = velocity (slope = “rise” / “run”) horizontal line: at rest straight line: constant velocity positive slope = positive velocity negative slope = negative velocity curved line: acceleration.

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Describing motion with Graphs

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  1. Describing motion with Graphs

  2. Position vs. Time Graphs • x-axis: Time • y-axis: Position • slope = velocity (slope = “rise” / “run”) • horizontal line: at rest • straight line: constant velocity • positive slope = positive velocity • negative slope = negative velocity • curved line: acceleration

  3. Position vs. Time Graphs Determine the velocity from each of the above graphs.

  4. Position vs. Time Graphs What is happening to the velocity of an object whose position-time graph looks like this? What is this object doing?

  5. Velocity vs. Time Graphs • x-axis: Time • y-axis: velocity • slope = acceleration (slope = “rise” / “run”) • horizontal line: constant velocity • straight line: uniform acceleration • positive slope = positive acceleration • negative slope = negative acceleration (deceleration) • curved line: non-uniform acceleration

  6. Velocity vs. Time Graphs Determine the acceleration from each of the above graphs.

  7. Velocity vs. Time Graphs What is happening to the acceleration of an object whose velocity-time graph looks like this?

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