What term describes the resistance an object has to a change in its state of motion?

• A. Friction
• B. Momentum
• C. Inertia
• D. Acceleration

Answer: (C)

The term that describes the resistance an object has to a change in its state of motion is inertia. Inertia is a fundamental property of matter that reflects an object's tendency to remain at rest or to continue moving in a straight line at a constant speed unless acted upon by an external force. This concept is a key principle in Newton's first law of motion, which states that an object will not change its state of motion unless a net force is applied.

Understanding inertia helps in various applications, especially in navigation and maneuvering of vessels, where managing the motion of a ship in water takes into account its mass and the forces acting on it.

The other terms, while related to motion, do not describe resistance to change in motion in the same way. Friction refers to the resistance that one surface or object encounters when moving over another. Momentum is the quantity of motion an object has, which is dependent on its mass and velocity, but does not specifically refer to resistance. Acceleration measures the rate of change of velocity, but again, does not define resistance to motion. Thus, inertia is the most accurate term for describing this property.