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science tet 1

Terms

undefined, object
copy deck
rolling friction
friction btwn rolling obj. and the surface it is rolling on
newton's 2nd law formula
a = net force (Newtons) over mass (kg)
momentum
the property that a moving obj. has because of its mass and velocity
friction
the force that opposes motion btwn two surfaces that are touching each other and moving in opp. directions
3 factors of funding air ressitance
shape, speed, size
terminal velocity
forces an a falling obj. are balanced and the obj. fall with a constant speed
air resistance
the force air exerts on a moving obj.
horizontal motion
the motion that is inertia to earth's surface and is due to inertia
weight
gravitational force exerted in an object
centripetal acceleration
acceleratin toward the center of a curve or circle
static friction
friction btwn surfaces that are not moving past each other
gravity depends on
mass of objects and the distance between them
law of conservation of momentum
total amount of momentum does not change unless outside forces act on it
microweld
areas where the surface bumps stick together and are a source of friction
why does anything thrown follow a curved path ?
gravity and its own inertia
the larger the surface the greater the
air resistance
what kind of force in gravity
long-range
mass
the amount of mass an object has
vertical motion
the motion that is perpendicular to earth's surface is from gravitational pull
acceleration due to gravity is
9.8 m/s2
sliding friction
force that opposes the motion of two surfaces that are sliding past each other
electromatic force
causes electricity and magnetism
what does nuclear force only act on
particles in the nuclei of atoms
centripetal force
the force that causes a moving object to move in a circular path
what kind of force is centripetal force
unbalanced
a force that works in pairs
action reaction
momentum formula
p = m times v
changing momentum formula
f = MVf - MVi over t
newton's 3rd law
for every action there is an equal and opposite reaction
formula for gravitational force
F = G m2m2 over d2
law of universal gravitation
allows the force gravity to be calculated btwn any 2 obj's if there masses and the distance btwn them are known

Deck Info

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