A 60kg man pushes a 40kg man by a force of 60N. The 40kg man has pushed the other man with a force of:
A
40N
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B
0
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C
60N
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D
20N
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Solution
The correct option is B60N Newton's third law: To every action, there is an equal and opposite reaction. So when 60kg man exerts a force of 60N on 40kg man, 40kg man also exerts the same force of 60N on the 60kg man.