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Whenever an object exerts a force on another object, the second object exerts a force of the same magnitude, but in the opposite direction to that of the first object.
a. sometimes true
b. always true
c. always false?
A force is exerted on the tires of a car to accelerate the car along the road.The force is exerted by the ___.
a. engine
b. tires
c. air
d.road

Answer :

(b)Always True. For every action, there is an equal, but opposite reaction; called the law of action-reaction.

Newton's third law: If an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A. This law represents a certain symmetry in nature: forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself.

Motion of boat in water and Firing a bullet from a gun are examples of Newton's third law of motion since these involves action and reaction forces.

To know more about Newtons law click here

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