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15 Cards in this Set

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  • Back
friction
resistance to motion (force)
translatoinal equilibrium
sum of all forces ating on 1 object equals 0
static friction
force required to get an object moving
frictional force
proportional to the normal force
sliding friction
(kinetic)
force required to help an object moving
force
produces changes in motion
balanced force
net force = zero
newtons 3rd law of motion
for every force (action) there is an equal and opposite force (reactoin)
normal force
a contact force exerted by an object on another in a direction perpendicular to the surface of contact
coefficient of friction
depends on type/nature of both surfaces
-unitless
unbalanced force
nonzero net force
results in acceleration in the direction of unbalanced force
net force
sum of all forces acting on a body
inertia
the tendancy of a body to resist changes in its motion
-->mass is a measure of inertia<--
newtons 1st law
law of inertia
-a body of rest remains at rest and a body of motion remains in motion w/ constant velocity
newtons 2nd law
acceleration of object is directly proportional to the NET force and inversly proportional to its mass. direction of acceleration is in the direction of applied net force.