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Published byMilton Bryce Harmon Modified over 9 years ago
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Gravity What is it? http://www.fi.edu/piec es/cych/apollo%2010 /story/hoi/ball3.html http://www.fi.edu/piec es/cych/apollo 10/story/hoi/ball.html
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Gravity is … A natural force that pulls all objects toward the center of the earth.
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WHAT IS A FORCE? A pull or a push on an object
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Which do you think would fall first? A bouncy ball Or a marble Try It!
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They fall at the same rate of speed, but the marble has more mass (weight) and so gravity makes it fall harder! Gravity has a stronger force on things with more mass!
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It takes a force to overcome gravity! Throw a bean bag in the air and then… Throw a basketball in the air. Which one was harder to throw?
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You had to use more force to throw the basketball because it has more mass (weight)
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