Energy 1 Flashcards
what is the principle of conservation of energy?
it states that energy can nver be created or destroyed; it can only be transferred from one form to another
formula: efficiency
useful energy out / total energy in
gravitational and elastic potential always get converted to:
kinetic energy
batteries convert:
chemical to electrical to run devices
electrical devices convert:
electrical energy into sound, light, heat
formula: kinetic energy
0.5 x m x v^2
what does kinetic energy depend on?
- the mass if the object
- the speed of the object
formula: gravitational potential energy
m x g x change in h
falling objects convert
Ep into EK
what is the formula for a falling object
kinetic energy gained = gravitational lost
this is due to the principle of conservation of energy