Question

1. which of the following best describes inertia?

a) the force that moves an object.
b) the resistance of an object to a change in its state of motion.
c) the energy required to stop a moving object.
d) the ability of an object to maintain a constant speed.

Explanation:

Inertia is a fundamental concept in physics. It is defined as the resistance of an object to a change in its state of motion, whether it is at rest or in motion. Option A describes a force causing motion, not inertia. Option C refers to the work - energy concept related to stopping an object, not inertia. Option D is an aspect of motion but not the core definition of inertia.

Answer:

B. The resistance of an object to a change in its state of motion.