11 terms

force

a push or a pull

balanced force

forces that cancel each other out when acting together on a single object

unbalanced force

forces that do not cancel each other out when acting together on a single object

position

location of an object

speed

changes in velocity with respect to time

velocity

the speed and direction of a moving object

acceleraction

how fast an object's position is changing with time at any moment

momentum

Combination of mass and speed

friction

a force that opposes the motion of one object moving past another

gravity

a force of attraction between two objects due to their mass and distance

inertia

the tendency for an object to resist a change in its state in motion (an object at rest will stay at rest)