Vocab
A force that resists motion.
Friction
The combination of all the forces acting on an object.
Net force
A=Fa
Newton's Second Law
for every action (force) in nature there is an equal and opposite reaction.
Newton's third law
A push or pull on an object
Force
Forces acting on an object that combine and form a net force of zero.
Balanced forces
Any motion in which an object is moving along a curved path
Circular motion
The forces two objects apply to each other
Force pair
An invisible force that pulls objects toward each other.
Gravity
Forces acting on an object that combine and form a net force that is not zero.
Unbalanced forces
A force that acts perpendicular to the direction of motion, toward the center of the curve
Centripetal force
A measure of how hard it is to stop a moving object
Momentum
The amount of matter in an object.
Mass
The tendency of an object to resist a change in its motion.
Inertia
the rate of change of velocity.
Acceleration
The total momentum of a group of objects stays the same unless outside forces act on the objects
The gravitational force exerted on an object.
Weight
If the net force on an object is zero the motion of the object does not change
Newton's first law
the force acting on an object that is moving through air flowing in the opposite direction.
air resistance
When you push on an object, the object pushes back with an equal force.
Action force