Eugenia on Rollerblades: Observational Experiment

Aim

To understand the motion of projectiles

Prior Knowledge

1. Understanding of motion with constant velocity.
2. Understanding of motion of falling objects.
3. Reference frames.

Description of the Experiment

• Observe the motion of the ball with respect to board. Draw a picture representing the motion of the ball.
• Observe the motion of Eugenia with respect to the board. Draw a picture representing the motion of Eugenia.
• Observe the motion of the ball with respect to Eugenia.Draw a picture representingthe motion of the ball.
• What can you say about the motion of the ball and Eugenia in each trial?
• Devise an explanation of why the ball always lands in Eugenia's hands.

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Questions

1. Propose an explanation for the motion fo the ball with respect to Eugenia.
2. What assumptions did you make about the mtion of the ball?