,"The rate at which an object rotates or revolves, measured in radians per second (rad/s).",,ω=v/r or ω=Δθ/Δt

Angular Acceleration (α)

,The rate of change of angular speed.,,α=Δω/Δt

,A measure of an object's mass in motion; it is a vector quantity equal to the product of an object's mass and velocity.,,p=mv

,The change in momentum of an object. It is equal to the average net force multiplied by the time interval over which the force acts.,,J=FavgΔt=Δp

,The energy an object possesses due to its motion.,,KE=21mv2

,The energy transferred to or from an object by a force acting over a distance.,,W=F⋅d=Fdcosθ

,The rate at which work is done or energy is transferred.,,P=W/Δt

Centripetal Force (Fc)

,The net force directed toward the center of a circle that keeps an object in uniform circular motion.,,Fc=rmv2

,The rotational equivalent of force; it is a measure of a force's effectiveness in causing an object to rotate about an axis.,,τ=rFsinθ

Moment of Inertia (I)

,A measure of an object's resistance to changes in its rotational motion (rotational mass). It depends on the object's mass and how that mass is distributed around the axis of rotation.,,"I varies by shape (e.g., Idisk=21mR2) "

,The state where an object is at rest. The two conditions for static equilibrium are that the net force and the net torque acting on the object must be zero.,,∑F=0 and ∑τ=0

(Y),A measure of the stiffness of an elastic material. It is the ratio of stress (force per unit area) to strain (fractional change in length).,,Y=Stress/Strain

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Physics Test#2

Term	Definition
Angular Speed (ω)	,"The rate at which an object rotates or revolves, measured in radians per second (rad/s).",,ω=v/r or ω=Δθ/Δt
Angular Acceleration (α)	,The rate of change of angular speed.,,α=Δω/Δt
Momentum (p)	,A measure of an object's mass in motion; it is a vector quantity equal to the product of an object's mass and velocity.,,p=mv
Impulse (J)	,The change in momentum of an object. It is equal to the average net force multiplied by the time interval over which the force acts.,,J=FavgΔt=Δp
Kinetic Energy (KE)	,The energy an object possesses due to its motion.,,KE=21mv2
Work (W)	,The energy transferred to or from an object by a force acting over a distance.,,W=F⋅d=Fdcosθ
Power (P)	,The rate at which work is done or energy is transferred.,,P=W/Δt
Centripetal Force (Fc)	,The net force directed toward the center of a circle that keeps an object in uniform circular motion.,,Fc=rmv2
Torque (τ)	,The rotational equivalent of force; it is a measure of a force's effectiveness in causing an object to rotate about an axis.,,τ=rFsinθ
Moment of Inertia (I)	,A measure of an object's resistance to changes in its rotational motion (rotational mass). It depends on the object's mass and how that mass is distributed around the axis of rotation.,,"I varies by shape (e.g., Idisk=21mR2) "
Static Equilibrium	,The state where an object is at rest. The two conditions for static equilibrium are that the net force and the net torque acting on the object must be zero.,,∑F=0 and ∑τ=0
Young's Modulus	(Y),A measure of the stiffness of an elastic material. It is the ratio of stress (force per unit area) to strain (fractional change in length).,,Y=Stress/Strain

Created by: RaineyM

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