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Free body diagram
a sketch that shows an object and the forces acting on it; also called a force diagram.
Traction
the frictional force between a vehicles ires and the road; responsible for accelerating the vehicle.
Dynamics
the branch of physics that studies forces and how they can change an objects motion.
Tension
a pulling force that is transmitted through a rope, chain, or similar object
Friction
a contact force that works against the motion of objects trying to move past each other.
Gravity
a field force that acts between the masses of any two objects.
Inertia
the tendency of matter to resist changes in its motion.
Net force
the vector sum of all the forces acting on an object.
force
a push or pull on an object
dynamics
the branch of physics that studies forces and how they can change an objects motion
contact force
a force that acts only when one object touches another
field force
a force that acts between objects that are not touching; also called force at a distance
balanced forces
simultaneous forces whose pushes and pulls cancel each other out
net force
the vector sum of all the forces acting on an object
unbalanced forces
a collection of forced on an object that dont cancel out and thus cause an acceleration
free-body diagram
a sketch that shows an object and the forces acting on it; also called a force diagram
inertia
the tendency of matter to resist changes in its motion
law of inertia
the law that states that objects at rest and objects in motion continue in a straight line at a constant velocity unless acted on by a net external force; also called Newtons first law of motion
law of acceleration
the law that states that the acceleration of an object is directly proportional to the net force acting on the object and is inversely proportional to its mass; also called Newtons second law of motion
law of action-reaction
the law that states that for every action force, there is equal and opposite reaction force; also called Newtons third law of motion
tension
a pulling force that is transmitted through a rope, chain, or similar object '
natural force
the force that acts in a direction that is perpendicular to the surface where two objects make contact
gravity
a field force that acts between the masses of any two objects
law of universal gravitation
the law that states that the strength of gravity varies in direct proportion to the masses of the objects involved and inversely to the square of the distant between their centers of mass
friction
a contact force that works against the motion of objects trying to move past each other
traction
the frictional force between a vehicles ires and the road; responsible for accelerating the vehicle
centripetal force
a force that accelerates an object toward the center of a circular path
force
a push or pull on an object
contact force
a force that acts only when one object touches another
field force
a force that acts between objects that are not touching; also called force at a distance
balanced forces
simultaneous forces whose pushes and pulls cancel each other out
unbalanced forces
a collection of forced on an object that don’t cancel out and thus cause an acceleration
law of inertia
the law that states that objects at rest and objects in motion continue in a straight line at a constant velocity unless acted on by a net external force; also called Newton’s first law of motion
law of acceleration
the law that states that the acceleration of an object is directly proportional to the net force acting on the object and is inversely proportional to its mass; also called Newton’s second law of motion
law of action-reaction
the law that states that for every action force, there is equal and opposite reaction force; also called Newton’s third law of motion
natural force
the force that acts in a direction that is perpendicular to the surface where two objects make contact
law of universal gravitation
the law that states that the strength of gravity varies in direct proportion to the masses of the objects involved and inversely to the square of the distant between their centers of mass
centripetal force
a force that accelerates an object toward the center of a circular path
fundamental force
any one of the four forces that appear to underlie all the other known forces: gravity, strong force, weak force, and electromagnet force
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