8 A teacher advises Janet that the experiment could be made even better with a control group. What could Janet do to create a control group? A. Drop the ball from different heights. B. Use different balls on each surface. C. Include the floor as one of the surfaces. D. Make one of the surfaces paper instead of cardboard.

8 A teacher advises Janet that the experiment could be made even better with a control group. What could Janet do to create a control group? A. Drop the ball from different heights. B. Use different balls on each surface. C. Include the floor as one of the surfaces. D. Make one of the surfaces paper instead of cardboard.

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter8: Rotational Motion

Section: Chapter Questions

Problem 101A

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