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Forces
22 cards·by JChouinard
force
a push or a pull that acts on an object.
newton
the SI unit for force.
net force
the overall force acting on an object after all the forces are combined.
friction
a force that opposes the motion of objects that touch as they move past each other.
static friction
a friction force that acts on objects that are not moving.
sliding friction
a friction force that opposes the motion of an object as it slides over a surface.
rolling friction
a friction force that acts on rolling objects, caused by the change in shape at the point of
rolling contact.
fluid friction
a friction force that opposes the motion of an object though a fluid.
air resistance
fluid friction acting on an obhect moving through the air.
gravity
the attraction between any two objects because of their masses.
terminal velocity
the constant velocity of a falling object when the force of air resistance equals the force of
gravity.
projectile motion
the curved path of an object in free fall after it is given an initial forward velocity.
inertia
the tendency of an object to resist a change in its motion.
mass
the amount of matter in an object.
weight
the force of gravity acting on an object.
momentum
the product of an object's mass and its velocity.
law of conservation of momentum
law stating that the total momentum of a system does not change if no net force acts on the
system.
electromagnetic force
a force associated with charged particles, which has two aspects, electric and magnetic
force.
strong nuclear force
the powerful attractive force that binds protons and neutrons together in the nucleus.
weak nuclear force
a powerful attractive force that acts over a short range.
gravitational force
an attractive force that acts between any two objects.
centripetal force
a force that continuously changes the direction of an object to make it move in a circle.