Question

the scientific revolution end of lesson test
2 how long did sir isaac newton work on the law of gravity?
1 year
over 50 years
5 years
over 20 years
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Explanation:

Isaac Newton worked on the concept of the Law of Gravity over a long - period. His initial insights began in the 1660s and his work on it continued and was refined over the following decades, which was over 20 years.

Answer:

Over 20 years