Answers

2016-01-04T19:05:49+05:30
Because the earth has gravity that was found by Issac Newton
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2016-01-05T16:56:46+05:30
The Apple from the tree falls because of the gravity. its proved in the first law of Newton.
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actually not in the first law of Newton but he taught to make it a law but the three laws of Newton are directly or indirectly dependent on this law
I mistyped it sorry...
you're welcomed
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