Physics key terms 1.0 / 5 based on 1 rating ? Physicskey words 1ASAQA Created by: SophieCreated on: 04-01-14 14:50 change of velocity per unit time acceleration 1 of 34 acceleration of an object acted only on by the force of gravity acceleration of free fall 2 of 34 a measement that is obtained, using accurately collaborated instruments correctly, is said to be accurate accuracy 3 of 34 the degree of confidence in the measurement usually called the uncertainty accuracy 4 of 34 maximum displacement of a vibrating particle; or a transverse wave, it is the distance from the middle to the peak of the wave amplitude 5 of 34 the distance travelled by a vehicle in the time it takes to stop braking distance 6 of 34 snaps without stretching or bending when subject to stress brittle 7 of 34 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 8 of 34 two sources of waves are coherent if they emit waves with a constant phase difference coherent 9 of 34 the angle of incidence of a light ray must exceed the critical angle for toga internal reflection to occur critical angle 10 of 34 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 11 of 34 mass per unit volume of a substance density of a substance 12 of 34 spreading of waves on passing through a gap or near edge diffraction 13 of 34 a plate with many closely-ruled parallel slits on it diffraction grating 14 of 34 Distance in a given direction displacement 15 of 34 the force of a fluid resistance on a moving object through a fluid drag force 16 of 34 stretches easily without breaking ductile 17 of 34 any point beyond which a wire is permanently stretched elastic limit 18 of 34 property of a solid that enables to regain its shape after it has been deformed or distorted elasticity 19 of 34 the capacity to do work energy 20 of 34 the state of an object when at rest or in uniform motion equilibrium 21 of 34 uncertainty of a measurement error of measurement 22 of 34 any interaction that can velocity of an object force 23 of 34 a diagram of an object showing only the forces acting upon it free-body force diagram 24 of 34 the number of cycles of a wave to pass through a point per second frequency 25 of 34 force opposing the motion of a surface that moves or tries to move across another surface friction 26 of 34 force of gravity per unit mass on a small object gravitational field strength 27 of 34 the extension of a spring is proportional to the force needed to extend it Hooke's Law 28 of 34 formation of points of cancellation and reinforcement where two coherent waves pass through each other interference 29 of 34 the energy of an object due to its motion kinetic energy 30 of 34 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 31 of 34 force x perpendicular distance from the line of action of the force to the point moment of force about a point 32 of 34 mass x velocity momentum 33 of 34 the force that drives a vehicle motive force 34 of 34
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