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general physics 1 final Flashcards

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16305299478scalarany quantity that can be expressed in terms of a single number0
16305307614vectora quantity that has a magnitude (amount) and a direction and that obeys the rules of vector addition1
16305377235unit vectora vector of magnitude (length) 1 unit and is used to show direction2
16305409368position (vector)a vector which locates some position in space relative to some (arbitrary) coordinate system3
16305421336displacement (vector)a vector from the initial position to the final position which indicates a change in position4
16305442070distance (scalar)length of the path traveled5
16305448359average speed=distance traveled/time6
16305470516instantaneous velocityvelocity of an object (magnitude and direction) at a particular instant in time7
16305478858instantaneous speedthe magnitude of the instantaneous velocity vector8
16305486746average accelerationthe change in velocity divided by the change in time9
16305501925instantaneous accelerationthe acceleration at a particular instant in time10
16305553789average velocity=displacement/time11
16305612991kinematics equation #1 Vf=Vo+at12
16305621165kinematics equation #2 Xf=Xo+Vot+½at²13
16305648517kinematics equation #3 Vf²=Vo²+2a∆x14
16305663702kinematics equation #4 Vavg=(Vf+Vo)/215
16305683888constant velocity meansacceleration=016
16306421249quadratic equation17
16306448661centripetal accelerationhas a magnitude v²/r and a direction towards the center of the circle18
16306514202acceleration=force/mass19
16306538476inertiathe tendency of a body to resist a change in its state of motion20
16306544174massthe measure of a body's inertia21
16306632535friction=mFn22
16306732229work=F(parallel component of force) x ∆x(distance23
16306759392perpendicular forcesdo no work24
16306767244F=ma25
16306773463kinetic energythe energy the body has due to its motion26
16306853328work energy theoremwork=½mvf²-½mvo²=∆KE27
16306924295conservative forcea force whose work does not depend on the oath28
16306942608potential energythe energy a body has due to its position29
16307015040powerthe rate at which work is done or at which energy is used or delivered30
16307020515power=work/time31
16307027056momentum=mass(velocity)32
16309684793energythe ability to do work33
16309716528forceA push or pull exerted on an object34
16309733497speedThe distance an object travels per unit of time35
16309733498mechanical energythe energy associated with the motion and position of an object36
16309747606total energyAll energy, potential and kinetic, within a specific system.37
16309754251conservation of mechanical energyif there is no friction or air resistance, the mechanical energy of a system changes only if the system does work on something else or energy is added from outside the system.38
16309766373conservation of total energythe total energy of an isolated system remains constant39
16309766508momentumThe product of an object's mass and velocity40
16309772277impulsechange in momentum41
16309779725center of massthe point in an object that moves as if all the object's mass were concentrated at that point42
16309783604impulse momentum theoremstates that the impulse on an object equals the object's final momentum minus the object's initial momentum43
16320541504Perfectly inelastic collisionMomentum is conserved and energy isn't, objects collide and stick together, equal and opposite velocity44
163205520151-D elastic collisionBoth momentum and energy are conserved45

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