# Shared Flashcard Set

## Details

Physics - energy
n.a
13
Physics
06/18/2012

Term
 The "Big 5"
Definition
 d= 1/2 (V0 + V)t v=v0 + at d=v0t + 1/2at2 d=vt -1/2at2 v2=v02 + 2ad
Term
 equation for kinetic energy and unit of kinetic energy
Definition
 KE= 1/2mv2   KE in joules (J)
Term
 Work-Energy Theorem
Definition
 Wtotal = ΔKE
Term
 If F is parallel to d, what is W? If F is perendicular to d, what is W? (eq)
Definition
 if parallel: W=Fd   if perpendicular: W=0
Term
 equation for centripetal force
Definition
 Fc = m(v2/r)
Term
 relationship between grav. potential energy and Work by grav.
Definition
 ΔPEgrav = - WbyFgrav
Term
 work by the force of gravity (eq)
Definition
 WbyFgrav = -Fgravh = -mgh
Term
 change in grav. potential energy when:   height of m incres. by h height of m decreas. by h
Definition
 height of m increas. by h: ΔPEgrav = mgh   height of m decreas. by h: ΔPEgrav = -mgh
Term
 Force of kinetic friction (eq)
Definition
 Ff = μkFN
Term
 Work by Force of friction
Definition
 WbyFf = -Ff x d
Term
 Conversion of total mechanical energy eq.
Definition
 Ei = Ef
Term
 modified conversion of toal mechanical energy for friction eq.
Definition
 Ei + WbyF = Ef
Term
 Total mechanical energy
Definition
 E = KE + PE
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