Question

Which of the following deals with inertia of a body ?

• A. Newton's first law of motion
• B. Newton's second law of motion
• C. Newton's third law of motion
• D. all of these

Answer 1

Answer:

A. Newton's first law of motion

• Newton's first law is also called the law of inertia. It describes how a body at rest remains at rest and a body in motion remains in motion unless acted upon by an external force. This tendency to resist change in motion is called inertia, and it is specifically described in Newton's first law. Newton's second and third laws do not deal directly with inertia—they focus on force, acceleration, and action-reaction rather than the resistance to change in a body's motion.