general physics 1 final Flashcards

16305299478	scalar	any quantity that can be expressed in terms of a single number	0
16305307614	vector	a quantity that has a magnitude (amount) and a direction and that obeys the rules of vector addition	1
16305377235	unit vector	a vector of magnitude (length) 1 unit and is used to show direction	2
16305409368	position (vector)	a vector which locates some position in space relative to some (arbitrary) coordinate system	3
16305421336	displacement (vector)	a vector from the initial position to the final position which indicates a change in position	4
16305442070	distance (scalar)	length of the path traveled	5
16305448359	average speed=	distance traveled/time	6
16305470516	instantaneous velocity	velocity of an object (magnitude and direction) at a particular instant in time	7
16305478858	instantaneous speed	the magnitude of the instantaneous velocity vector	8
16305486746	average acceleration	the change in velocity divided by the change in time	9
16305501925	instantaneous acceleration	the acceleration at a particular instant in time	10
16305553789	average velocity=	displacement/time	11
16305612991	kinematics equation #1 Vf=	Vo+at	12
16305621165	kinematics equation #2 Xf=	Xo+Vot+½at²	13
16305648517	kinematics equation #3 Vf²=	Vo²+2a∆x	14
16305663702	kinematics equation #4 Vavg=	(Vf+Vo)/2	15
16305683888	constant velocity means	acceleration=0	16
16306421249	quadratic equation		17
16306448661	centripetal acceleration	has a magnitude v²/r and a direction towards the center of the circle	18
16306514202	acceleration=	force/mass	19
16306538476	inertia	the tendency of a body to resist a change in its state of motion	20
16306544174	mass	the measure of a body's inertia	21
16306632535	friction=	mFn	22
16306732229	work=	F(parallel component of force) x ∆x(distance	23
16306759392	perpendicular forces	do no work	24
16306767244	F=	ma	25
16306773463	kinetic energy	the energy the body has due to its motion	26
16306853328	work energy theorem	work=½mvf²-½mvo²=∆KE	27
16306924295	conservative force	a force whose work does not depend on the oath	28
16306942608	potential energy	the energy a body has due to its position	29
16307015040	power	the rate at which work is done or at which energy is used or delivered	30
16307020515	power=	work/time	31
16307027056	momentum=	mass(velocity)	32
16309684793	energy	the ability to do work	33
16309716528	force	A push or pull exerted on an object	34
16309733497	speed	The distance an object travels per unit of time	35
16309733498	mechanical energy	the energy associated with the motion and position of an object	36
16309747606	total energy	All energy, potential and kinetic, within a specific system.	37
16309754251	conservation of mechanical energy	if 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
16309766373	conservation of total energy	the total energy of an isolated system remains constant	39
16309766508	momentum	The product of an object's mass and velocity	40
16309772277	impulse	change in momentum	41
16309779725	center of mass	the point in an object that moves as if all the object's mass were concentrated at that point	42
16309783604	impulse momentum theorem	states that the impulse on an object equals the object's final momentum minus the object's initial momentum	43
16320541504	Perfectly inelastic collision	Momentum is conserved and energy isn't, objects collide and stick together, equal and opposite velocity	44
16320552015	1-D elastic collision	Both momentum and energy are conserved	45