the change in an object's position

a motionless place or object used for comparison with a moving object

the motion of an object along a line or a path from one position to another

the motion of an object around a central point

a back-and-forth or up-and-down motion

a push or pull of one object on another through direct touch

a push or pull on an object without direct touch

surrounding an object in which a noncontact force is active

a force that opposes motion

a pulling force that resists stretching

resistance to a change in motion

Objects at rest stay at rest, objects in motion stay in motion unless acted upon by a force

any change in the speed or direction of an object's motion

The greater the mass of an object, the greater the amount of force needed to accelerate the object

For every action, there is an equal and opposite reaction

the motion described from a particular reference point

the appearance of motion

Electricity, magnetism, and gravity are ____________ forces

You might use the horizon as a _____________ ____________ to tell how high you are swinging on a swingset.

Movies give the effect of __________________ ______________.

Friction and tension are both _______________ forces

For every action there is an equal and opposite reaction

Objects keep doing what they are doing unless they are acted upon by forces.

The greater the mass of an object, the greater the amount of force needed to accelerate the object.

a spinning top

The ground during an earthquake

A cymbal as it is struck

a plane flying

a mixer's spinning beaters

The air pushing against a parachute

The rope in a game of tug-of-war

a person falling off a couch onto the floor

when a baseball moves from one place to another it's _______________ changes.

You and a golfer describe the ______________ ____________ of an air born golf ball on the basis of where you are both standing.