Which statement describes the Law of Inertia?

Which statement describes the Law of Inertia?

• A. Object at rest will stay at rest unless acted on by an outside force
• B. The relationship between mass, acceleration, and the applied force
• C. For every action there is an equal and opposite reaction
• D. The acceleration is proportional to force and in the same direction

Answer: (A)

Inertia is the tendency of a body to resist changes in its motion. Newton's First Law says an object at rest stays at rest unless a net external force acts on it, and an object in motion continues moving with the same velocity unless a net external force changes its speed or direction. The statement focuses on the resting side of that idea, capturing how an object won’t start moving unless something pushes or pulls it. In sport and everyday movement, this explains why you must apply a push to overcome the resistance of a stationary body or limb before it begins to move. The other laws describe how force causes acceleration, or how forces come in action-reaction pairs, rather than describing the default state of rest or uniform motion when no net force is present.

Inertia is the tendency of a body to resist changes in its motion. Newton's First Law says an object at rest stays at rest unless a net external force acts on it, and an object in motion continues moving with the same velocity unless a net external force changes its speed or direction. The statement focuses on the resting side of that idea, capturing how an object won’t start moving unless something pushes or pulls it. In sport and everyday movement, this explains why you must apply a push to overcome the resistance of a stationary body or limb before it begins to move. The other laws describe how force causes acceleration, or how forces come in action-reaction pairs, rather than describing the default state of rest or uniform motion when no net force is present.