forces
A push or pull exerted on an object
force
States that an object moving at a constant velocity keeps moving at that velocity unless an unbalanced force acts on it.
Newton's First Law of Motion
force that opposes the motion of objects that move through the air.
air resistance
gravitational force exerted on an object.
weight
a region of space in which every point has a physical quantity, such as a force.
field
sum of all of the forces that are acting on an object.
net force
States that the acceleration of an object is in the same direction as the net force on the object, and that the acceleration equals the net force divided by its mass.
Newton's Second Law of Motion
the maximum speed an object will reach when falling through a substance, such as air
terminal velocity
a push or pull exerted on an object
force
gravitational force exerted on an object
weight
force that opposes the sliding motion between two touching surfaces
friction
States that when one object exerts a force on a second object, the second object exerts a force on the first object that is equal in strength and in the opposite direction.
Newton's Third Law of Motion
describes the fall of an object on which only the force of gravity is acting.
free fall
sum of all of the forces that are acting on an object
net force
tendency of an object to resist any change in its motion.
inertia
attractive force between two objects that depends on the masses of the objects and the distance between them.
gravity
tendency of an object to resist any change in its motion.
inertia
a force that is directed toward the center of a curved or circular path.
centripetal force
force that opposes the sliding motion between two touching surfaces.
friction
force that opposes the motion of objects that move through the air.
air resistance
a region of space in which every point has a physical quantity, such as a force.
field
states that an object moving at a constant velocity keeps moving at that velocity unless an unbalanced force acts on it.
states that the mass of all substances present before a chemical change that equals the mass of all substances remaining after the change
Law of conservation of momentum
attractive force between two objects that depends on the masses of the objects and the distance between them.
gravity
describes the fall of an object on which only the force of gravity is acting.
free fall