Flashcards in Chapter 19 vocab Deck (21)
when an object changes position over time relative to a reference point
The object that appears to stay in place, or an arbitrary point on an object used to establish its position
How far an object travels from an initial position to a final position
The position that an object starts at±
The position that an object ends at
The distance traveled divided by the time interval during which the motion occurred
the speed of an object in a particular direction.
The rate at which velocity changes over time; an object accelerates if its speed, direction, or both change.
The location of an object in relation to a reference point
a push or pull exerted on an object in order to change the motion of the object; force has the size and direction.
The SI unit for force; 1 N = an object weighing 1kg accelerating at the rate of 1 meter per second
the combination of all of the forces acting on an object
when the forces on an object produce a net force of 0N
a force that opposes motion between 2 surfaces that are in contact.
when a force is applied to an object but does not cause the object to move.
Friction between 2 surfaces
a force of attraction between objects that is due to their masses.
a measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe.
a measure of the amount of matter in an object.