Using your own words, and good English, briefly explain why bodies of different weight accelerate towards Earth at the same rate if air resistance is excluded.
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Question No. 2
What is the value of g?
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Question No. 3
What is the name of the standard unit of force? How is this unit defined?
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Question No. 4
What equation relates mass, force and acceleration?
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Question No. 5
What single word is used to describe the shape of our planet?
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Question No. 6
What causes the slight bulge at Earth’s equator?
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Question No. 7
What simple apparatus can be used to measure small differences in the strength of a gravitational field?
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Question No. 8
Where, on the surface of Earth, is the gravitational field strongest? Give a brief reason for your answer.
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Question No. 9
What is the equatorial circumference of our planet?
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Question No. 10
In which year, and by whom, was the famous demonstration performed of dropping a hammer and a feather on the surface of the moon?
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