week2-1 - How does a fall object behave? Before releasing...

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Before releasing the balls, decide what you think will happen. A. the heavier object will fall faster than the lighter one B. the lighter object will fall faster than the heavier one C. both objects will fall at about the same rate How does a fall object behave? Aristotle’s said (A) is correct.
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Looks like Aristotle is right, for over 1000 years, until Galileo did an experiment at the Leaning Tower of Pisa.
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Apollo 15 Hammer/Feather gravity demonstration
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1K-11: Drop a Coin and a Feather before removing air Drop a Coin and a Feather After removing air
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Earth exerts a gravitational force on objects that is attractive (towards Earth’s surface). Near Earth’s surface, this force produces a constant acceleration downward . Galileo was the first to accurately measure this acceleration due to gravity . v = v 0 + at d = v 0 t + ½*at 2 This acceleration appear at any time and any location on earth. is the same for all objects Otherwise, the feather and hammer will fall to the ground at different time . Usually people use
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week2-1 - How does a fall object behave? Before releasing...

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