Motion and forces Flashcards
Reference point
A location to which another location is compared.
position
An object’s location.
Motion
A change of position over time.
Speed
A measure of how fast something moves though a particular distance over a definite time period.
Velocity
A speed in a specific direction.
Vector
A quantity that has both size and direction.
Acceleration
The rate at which velocity changes over time
Force
A push or pull, something that changes the motion of an object.
Net force
The overall force acting on an object when all of the forces acting on it are combined.
Newton’s first law
A scientific law stating that object at rest remain at rest.
Inertia
The resistance of an object to a change in the speed or the direction of its motion.
Newton’s seconds law
A scientific law stating that the acceleration of an object increase with increased force and decrease with increased mass
Centripetal force
Any force that keeps an object moving in a circle.
Newton’s thirds law
A scientific law stating that every time one object exerts a force on another object.
