KD1: Weight & Balance

KD1: Weight & Balance Run Slideshow

Sample Text – Why does a yo-yo spin down? Why does a ball roll down a hill, not up? Why does rain fall down, not up? The answer to all these questions is the same. Gravity. Gravity is a force that pulls things. Earth’s gravity pulls things toward Earth. That means, down. Imagine if there were no gravity on Earth. How would things be different?

Sample Text - Why does a yo-yo spin down? Why does a ball roll down a hill, not up? Why does rain fall down, not up? The answer to all ...
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