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Isaac newton was born in 1642 the same year Galileo died.Newton became a brilliant scientists and mathematician.his greatest discovery was the law of gravity.
In the later life newton told a story about his discovery.he was trying to figure out what kept the moon traveling in its orbit around the earth. since the moon was in motion ,why didn't it fly into space in a straight line?
Then newton saw a apple fall off a tree.he wondered if the same force that pulled the apple to the ground was tugging on the moon was so far away and newton reasoned that the force was weaker there.
It was strong enough to bend the moons motion into a nearly circuar path around earth.this was newtons great insight.a singel force explained a falling appel on Earth and the movements of heavenly bodies as well.newton called it gravity
Newton stated the law of gravity in a simpel formula.al, physical objects he had forced of attraction between them. the strength of the force depended on the masses of the objects and distance between them.
for the example the moon and earth tugged on each other.at a centain point in space these tugs canceled each other out.the result was that the moon was trapped in its orbit around earth.
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