Force and Motion

a push or pull on an object

• force

• gravity

• motion

• constant

A force that opposes motion between two surfaces that are in contact

• gravity

• inertia

• friction

• unbalanced force

The tendency of an object to resist a change in motion

• unbalanced force

• inertia

• force

• motion

Change in velocity divided by the time it takes for the change to occur

• at rest

• motion

• deceleration

• acceleration

A decrease in speed

• acceleration

• deceleration

• motion

• at rest

the speed and direction of a moving object

• velocity

• deceleration

• acceleration

• speed

how fast an object's position changes with time at any given moment

• acceleration

• speed

• force

• velocity

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

• balanced force

• unbalanced force

• motion

• velocity

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

• balanced forces

• unbalanced forces

• force

• gravity

an object at rest will stay at rest and an object in motion will stay in motion with a constant speed and direction unless acted on by a force

• Newton's 1st Law of Motion

• Newton's 2nd Law of Motion

• Newton's 3rd Law of Motion