Motion and forces Flashcards
A location in which another location is compared.
Reference Point
An object’s location.
Position
A change of position of time.
Motion
A measure of how fast something moves through a particular distance over a definite time period. Speed is distance divided by time.
Speed
A speed in a specific direction.
Velocity
A quantity that has both size and direction.
Vector
The rate at which velocity changes over time.
Acceleration
A push or pull ; something that changes the motion of an object.
Force
The overall force acting on an object when all of the forces acting on it are combined.
Net force
A scientific law stating that objects at rest and objects in motion remain in motion with the same velocity, unless acted on by a nun balanced force.
Newton’s first law
The resistance of an object to a change in the speed or the direction of its motion.
Inertia
A scientific law stating that the acceleration of an object increases with increased force and decreases with increased mass.
Newton’s second law
Any force that keeps an object moving in a circle.
Centripetal force
A scientific law stating that every time one object exerts a force on another object, the second object exerts a force that is equal in size and opposite in direction back on the first object.
Newton’s third law