Single Choice

Sir Isaac Newton's third law of motion is called the action-reaction law. Which of the following statements appropriately describes the action-reaction forces?

AThey act on different objects
Correct Answer
BThey act on the same object
CThey are unequal in magnitude
DThey act at right angles to one another

Solution

Sir Newton's third law states "for an action there is always an equal and opposite reaction ".But both action and reaction acts on different objects , that can be understood by following example : if a book is placed on a table , weight of book does action in downward on table and table will exert equal reaction on book in upward reaction.They are acting on different objects.

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