Motion at changing speeds
Average velocity
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Explore the concept of "average velocity"
Use the
From steps to motion
tool to create different kinds of motions of a ball.
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When you click the show average button, another
motion is displayed in green.
Examine the connections between properties of the motion
of the red and green balls. Note
the duration of motion, direction of motion, and velocity.
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What is the meaning of the vertical green line? How is the motion of the balls affected if you move it to the right or to the left?
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Try to create the following situations and describe
them in as many representations as
you can:
- The red ball moves right then left; the green ball moves to the right all the time.
- The red ball moves right then left; the green ball moves to the left all the time.
- Both balls move to the right all the time.
- Both balls move to the left all the time.
- Both balls move to the right all the time, with the red ball ahead of the green ball.
- Both balls move to the right all the time, with the green ball ahead of the red ball.
- The red ball moves to the right and the green ball to the left all the time.
- The red ball moves all the time; the green ball stays in one place.
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