Science: A Closer Look - Chapter 11 (Forces)

the location of an object

• position

• motion

• frame of reference

a change in position over time

• position

• motion

• frame of reference

a group of objects from which you can measure position or the motion

• position

• motion

• frame of reference

how fast an object's position changes over time

• speed

• velocity

• acceleration

• momentum

the measurement that combines both the speed and the direction of a moving object

• speed

• velocity

• acceleration

• momentum

the change in velocity over time for an object

• speed

• velocity

• acceleration

• momentum

the product of mass multiplied by velocity

• speed

• velocity

• acceleration

• momentum

any push or pull from one object to another

• force

• friction

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

• force

• friction

when forces act on an object without changing it motion

• balanced force

• unbalanced force

• action force

• reaction force