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18 Cards in this Set

  • Front
  • Back
forces that combine to form a net force of zero
balanced force
a force that is exerted only when objects are touching
contact force
an influence tending to change the motion of an object or produce motion in a stationary object
force
the combination of all the forces acting on an object
net force
an object at rest will stay at rest or an object in motion will stay in motion unless acted on by a force
Newton's First Law of Motion
a force exerted when objects are not touching
noncontact force
forces that combine to form a net force that is not zero
unbalanced force
a squeezing force applied to an object that can make an object shrink
compression force
force exerted by a material when it is stretched or compressed
elastic force
a contact force that opposes the movement between two surfaces in contact
friction
an attractive force between all objects that have mass
gravity
all objects are attracted to each other with a force that depends on their masses and the distance between the objects
Law of Universal Gravitation
a force exerted by an object perpendicular to the surface of the object
normal force
pulling force applied to an object that can make an object stretch
tension force
the gravitational force exerted on an object
weight
in circular motion a force that acts perpendicular to the direction of motion toward the center of the circle
centripital force
the acceleration of an object is equal to the net force divided by the object's mass
(F=M x A)
Newton's Second Law of Motion
for every action, there is an equal and opposite reaction
Newton's Third Law of Motion