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Purpose: Demonstrate acceleration due to gravity with objects of different horizontal speeds falling at the same rate and to determine whether mass affects the speed at which things fall.
Summary: These activities create an opportunity for students to create experiments that explain acceleration and motion.
Objectives Links:
3. A: Measuring Motion
3. B: Inertia
2. A: Energy Transfer
Process Skills Checklist
Materials:
For each group of students:
- two marbles of the same size but different colors
- two larger marbles of the same size
- ruler with a groove down the middle
- two books
- three identical rubber balls
- tape
- string
- student worksheet
- scissors
Safety Concerns:
Common sense precautions; marbles may be harmful if swallowed.
Revision Date: November 2001
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