Motion & Forces Vocabulary Match the words to the correct definition.
a force of attraction between objects due to their masses gravity a force of attraction between objects due to their masses
a change in speed (velocity) or direction acceleration a change in speed (velocity) or direction
a force that opposes motion between two objects that are in contact friction a force that opposes motion between two objects that are in contact
the tendency of an object to resistance a change in motion inertia the tendency of an object to resistance a change in motion
a push or a pull (includes size and direction) force a push or a pull (includes size and direction)
work the result of a force moving an object (force and motion are same directio)
a measure of the amount of matter in an object mass a measure of the amount of matter in an object
the rate of motion (distance ÷ time) speed the rate of motion (distance ÷ time)
combination of all the forces acting on an object net force combination of all the forces acting on an object
the speed of an object in a particular direction velocity the speed of an object in a particular direction
an object’s change in position motion an object’s change in position
the pull of gravity on an object weight the pull of gravity on an object
newton the unit for force