Which of the following is correct when a person walks on a rough surface
(a) the frictional force exerted by surface keeps him moving
(b) the force which the man exerts on the floor keeps him moving
(c) the reaction of the force which the man exerts on floor keeps him moving
(d) none
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Answer:
b is correct option.
Explanation:
by newton's 3rd law of motion.
every action has an equal and opposite reaction.
the force which the man exerts on the floor keeps him moving.
the person applies force on floor and in reaction the floor applies same force and push the person forward.
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