AIR RESISTANCE
the friction that opposes the motion of falling objects and moving objects, when air hits the surface of an object.
VECTOR
a quantity that shows both magnitude (amount) and direction.
FORCE
a push or pull exerted by one object on another.
UNBALANCED FORCE
the forces acting on an object when the net force is not zero.
BALANCED FORCE
forces that produce a net force equal to zero.
NEWTON
a measurement for force (N)
MOTION
an object's change in position over time
DISTANCE
how far an object travels
FRICTION
a force that works against motion, caused by tiny bumps and ridges in surfaces.
SPEED
a rate of motion that depends on the distance an object travels over a period of time
SPEED FORMULA
Speed = distance / time
VELOCITY
a term used to describe an object's speed AND direction.
ACCELERATION
the rate at which velocity changes
INERTIA
the tendency of an object to resist a change in motion.
Newton's 1st Law of Motion
An object at rest tends to stay at rest and an object in motion remains in motion unless acted on by an unbalanced force.
Newton's 2nd Law of Motion
The acceleration of an object depends on the mass of the object and the force applied. A math equation that represents this law is: force = mass x acceleration (F=m x a)
Newton's 3rd Law of Motion
Every action has an equal and opposite reaction.