Technician A says Newton's first law of motion is the law of inertia. Technician B says Newton's second law of motion says that for every action, there is an equal and opposite reaction. Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because Newton's first law of motion, indeed, is the law of inertia, which states that an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. Technician B is incorrect because the statement given describes Newton's third law of motion, not the second. Newton's second law of motion states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object.

Technician a Says Newton's First Law of Motion Is the Law