Physics key terms

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  • Created by: Sophie
  • Created on: 04-01-14 14:50
change of velocity per unit time
acceleration
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acceleration of an object acted only on by the force of gravity
acceleration of free fall
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a measement that is obtained, using accurately collaborated instruments correctly, is said to be accurate
accuracy
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the degree of confidence in the measurement usually called the uncertainty
accuracy
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maximum displacement of a vibrating particle; or a transverse wave, it is the distance from the middle to the peak of the wave
amplitude
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the distance travelled by a vehicle in the time it takes to stop
braking distance
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snaps without stretching or bending when subject to stress
brittle
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the centre of mass of a body is the point through which a single force on the body has no turning effect
centre of mass
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two sources of waves are coherent if they emit waves with a constant phase difference
coherent
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the angle of incidence of a light ray must exceed the critical angle for toga internal reflection to occur
critical angle
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interval for a vibrating particle/a wave from a certain displacement and velocity to the next time the particle has the same displacement/velocity
cycle
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mass per unit volume of a substance
density of a substance
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spreading of waves on passing through a gap or near edge
diffraction
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a plate with many closely-ruled parallel slits on it
diffraction grating
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Distance in a given direction
displacement
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the force of a fluid resistance on a moving object through a fluid
drag force
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stretches easily without breaking
ductile
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any point beyond which a wire is permanently stretched
elastic limit
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property of a solid that enables to regain its shape after it has been deformed or distorted
elasticity
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the capacity to do work
energy
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the state of an object when at rest or in uniform motion
equilibrium
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uncertainty of a measurement
error of measurement
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any interaction that can velocity of an object
force
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a diagram of an object showing only the forces acting upon it
free-body force diagram
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the number of cycles of a wave to pass through a point per second
frequency
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force opposing the motion of a surface that moves or tries to move across another surface
friction
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force of gravity per unit mass on a small object
gravitational field strength
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the extension of a spring is proportional to the force needed to extend it
Hooke's Law
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formation of points of cancellation and reinforcement where two coherent waves pass through each other
interference
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the energy of an object due to its motion
kinetic energy
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the limit beyond which, when a wire or a spring is streched its extension is no longer proportional to the force that streches it
limit of proportionality
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force x perpendicular distance from the line of action of the force to the point
moment of force about a point
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mass x velocity
momentum
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the force that drives a vehicle
motive force
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Other cards in this set

Card 2

Front

acceleration of an object acted only on by the force of gravity

Back

acceleration of free fall

Card 3

Front

a measement that is obtained, using accurately collaborated instruments correctly, is said to be accurate

Back

Preview of the front of card 3

Card 4

Front

the degree of confidence in the measurement usually called the uncertainty

Back

Preview of the front of card 4

Card 5

Front

maximum displacement of a vibrating particle; or a transverse wave, it is the distance from the middle to the peak of the wave

Back

Preview of the front of card 5
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