ap physics

define total energy

sum of energies in a system

what is kinetic energy and what affects it?

energy of motion affected by mass and velocity

define potential energy

stored energy of an object due to height or stretch/compression

what is the difference between gravitational and elastic potential energy

gravitational - due to height

elastic - due to stretch/compression

how does thermal energy affect motion of an object

disputes motion in form of friction

difference between energy transformations and transfers

transformations - within a system

transfers - between system and environment

describe basic energy model

energy cannot only be transferred or transformed not created or destroyed

define work

W = F*d

amount of energy transferred in/out of system

define law of conservation of energy

energy cannot be created or destroyed

Kf + Uf + ^ETH = Ki +Ui

what is an isolated system

^E=0 , energy does not transfer in or not

unit for energy and conversion

Joules , = Nm = 1kgm²/s²

rotational vs linear kinetic energy

rotational - motion of a rotating object

linear - straight line motion

conversations vs nonconservative forces

conservative - help store energy

non conservative - didn’t help store energy

define power

rate of work done on or by a system P = W/t