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Galileo's Mast Experiment: Qualitative Testing Experiment
Aim
To test the idea of relative motion.Prior Knowledge
- Reference frames.
- Relative motion
Description of the Experiment
David will skate across the floor after pushing off once (his pace does not change after he starts moving) and then drop the ball that he is holding in his hand. Use your knowledge of motion to predict where the ball will land relative to David before you view the video.
Addtional Information
Think of how the ball will move with respect to David and how it will move with respect to the floor.
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Questions
- Did the outcome of the experiment match your prediction? If it did not, how should you revise the reasoning that led to the prediction?
- What would happen if David moved faster but with constant pace?
- What would you see if you were in a reference frame moving parallel to David with the same pace?
- What would you see if you were standing on the floor and David kept pushing off the floor after he released the ball?
