Details Title: Chapters 7 & 8 Description: Work Power etc. Total Flash Cards: 9 Created: 10/06/2008 16:22:05		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Physics Flashcards
Cards in this set: Term Work Definition W=Fll Δrll  For a constant force Work is scalar (no direction) Work can be + or - Work is + when the F component is in the direction of motion and negative when it is against motion. Unit for work is Joule   Term Kinetic Energy Definition K= (1/2)MV2 Scalar no direction Unit is Joule + only Term Potential Energy Definition U=Mgh Unit is Joule Not a vector may be + or- set a reference level for height, usually the lowest relevent point in the problem h≡0 at that point Term Work Energy Conservation Definition ωtotal=Δk (change in kinetic energy) ωtotal=ωnon-conservative+ωconservative ωcon=-ΔU Δk=ωNC- ΔU kο +Uο+ωN=kf+Uf left side is Total initial mechanical energy Eο Right side is total final mechanical energy Ef Use the work energy equation any time you have a combination of... change in height, speed or work Term Kinematics Definition Vf=Vο+at Vf2=Vο2+2aΔr rf=rο+vοt+1/2at2 Term Projectile Equations Definition Vfy=Voy-gt V2fy=V2oy-2gΔy yf=yo+Voyt-(1/2)gt2 xf=xo+Voxt (range equation) Term Power Definition P=ω/Δt Units are watts Term Definition Term Definition