1) The amount of matter in an object or substance a) weight b) mass c) acceleration d) inertia 2) The distance an object moves per unit of time, such as miles per hour. a) force b) gravity c) friction d) speed 3) A force that resists motion. a) friction b) motion c) inertia d) gravity 4) The force that pulls objects toward each other a) force b) inertia c) gravity d) acceleration 5) The tendency of an object to resist a change in motion. a) speed b) inertia c) Weight d) motion 6) A change in an object's speed or direction. a) speed b) friction c) gravity d) acceleration 7) A push or a pull a) motion b) mass c) gravity d) force 8) A measure of the pull of gravity on an object. a) mass b) gravity c) weight d) speed 9) A change in the position of an object. a) motion b) acceleration c) speed d) mass

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