Physical Dynamics

Word List with 17 words
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Words in This List

conservation of momentum
noun
law saying if there is no external force acting on a system the total momentum remains constant
force
noun
influence on a body or system that can produce effects such as change in movement or shape
force diagrams
noun
diagram showing all of forces acting on an object
friction
noun
surface resistance to relative motion, as of sliding or rolling.
impulse
noun
single, usually sudden, flow of current in one direction
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law of areas
noun
says a line linking a planet to the sun sweeps out equal areas in equal time
law of orbits
noun
says all planets move in elliptical orbits with the sun at one focus
law of periods
noun
says square of period of any planet is proportional to cube of semimajor axis of its orbit
linear momentum
noun
the product of the mass and velocity of an object
mass
noun
quantity of matter as determined from its weight or from Newton's second law of motion
newton's first law of motion
noun
says body remains at rest or in motion with constant velocity unless acted upon by external force
newton's second law of motion
noun
says when a net force acting on an object will cause acceleration of that object
newton's third law of motion
noun
says that for every action there is an equal and opposite reaction
newtons
noun
unit of measurement for force
static equilibrium
noun
state of an object when sum of all forces acting on it equal zero
universal gravitation
noun
says universe's massive particles attract other such particles with force proportional to their mass
weight
noun
force that gravitation exerts upon a body, equal to mass times local acceleration of gravity

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