“The resistance in an object that resists changes in its motion is called:”

"Inertia a fundamental concept in physics describes an object’s tendency to resist changes in its state of motion whether at rest or in uniform motion. Defined by Newton’s First Law it depends on an object’s mass—greater mass means greater inertia. This principle underpins mechanics explaining phenomena from vehicle motion to planetary orbits. Understanding inertia is essential in engineering astronomy and everyday applications like vehicle safety design where managing inertial forces enhances stability and safety illustrating its broad relevance in scientific and practical contexts."