# AP Physics B Formula Study Sheet

Jun 17th, 2015
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Kinematics - Δx = area under v-t graph Δv = area under a-t graph>>displacement is a change in position; velocity is the rate of change of displacement, acceleration is the rate of change of velocity. Net Force Fnet = ma -the sum of all forces is proportional to mass x acceleration.

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AP Physics B Formula Study SheetNEWTONIAN MECHANICSthe sum of all forces is proportional to mass x accelerationKinematics x = area under v-t graph v = area under a-t graphdisplacement is a change in position; velocity is the rate of change of displacement, acceleration is the rate of change of velocityFriction forceFnet = maNet ForceFf = FNthe friction force is proportional to the coefficient of friction x the normal forcecentripetal accelerationthe acceleration of an object experiencing UCM is equal to the speed2 / the radiustorque = rFtorque is equal to the perpendicular distance x the forcemomentump = mvmomentum is equal to mass x velocityimpulseJ = Ft = mvimpulse is equal to the change in momentumkinetic energyK = mv2kinetic energy is mass x velocity2gravitational potential energyUg = mghgravitational potential energy is mass x gravitational field x heightmechanical workW = Fxwork is the energy done by an external force moving through a displacementpower (general definition)P = power is the rate of energy transferpower in terms of velocityP = Fvpower is the rate at which an external force moves through a displacementspring forceFs = kxthe force in a spring is equal to the spring constant x the amount of stretch or compression of the springthe period of a spring depends on mass and spring constant (not amplitude)spring potential energyUs = kx2the energy stored in a spring = x spring constant x the str

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