Activity 1: "Going Up and Down" Materials: small rubber ball, coin, crumpled paper, a sheet of bond paper Procedure: 1. Hold a small ball and a coin. Put them in your left palm. Throw them up. Observe the objects. 2. Drop a sheet of paper and crumpled paper at the same time. Observe the objects. Questions: 1. What happened when you throw the ball and the coin? 2. Which of them reached the floor first? Why do you think so? 3. What happened when you dropped the crumpled paper and the flat sheet of paper? 4. Which of the papers reached the floor first? Why? 5. What makes an object fall down?
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Answer:
1. As I throwed the coin and paper, the coin landed first after a very short period of time due it’s weight.
2. The coin landed first because it is more heavier than the paper.
3. The crumpled paper will fall faster than the uncrampled piece of paper because there is no so called force that pushes the light weighed object up.
4. The crampled paper landed first, it is more heavy so it accelerated faster than the uncrampled piece of paper.
5. The objects tend to fall down because of gravity. Gravity is a force in the center of the Earth that pulls the objects near the surface of the planet towards it. Heavier objects tend to reach the ground first due to it’s weight, since heavier objects accelerate faster.
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