Procedure Coin Drop 1. Arrange the setup as shown in the figure. 2. Slowly pull the cardboard with your hand and observe what happens. 3. Arrange again the setup as shown. This time quickly flick the cardboard with your finger. Observe again what happens. 4. What happens when you slowly pulled the cardboard? Explain. 5. What happens when you flicked the cardboard? Explain. 6. What is the role of mass in this activity? 7. How do you describe the applied force in this setup? Stack of Coins 8. Stack the coins on a flat-level surface. 9. Quickly hit the coin at the bottom with the edge of the ruler. 10. What happens when you hit the coin at the bottom? Why is this so? 11. What is the role of the mass of the coin and gravity in this activity? 12. How do you describe the applied force in this setup? Mass and Inertia 1. One bucket is filled with sand while the other bucket is empty. Then, both buckets are pushed. 2. Based on the given bucket which one has more mass? 3. Which bucket has greater inertia? 4. Which bucket do you think is more difficult to move? Explain. 5. Based on the given activity, explain what inertia is.

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