Conservation of Energy

energy can never be created or destroyed but

can change type

Kinetic energy is

the energy which an object possesses due to its motion

gravitational potential energy is

the energy an object possesses due to its height in a gravitational field

total energy always

stays the same

energy changed into unwanted forms is called

energy loss

gravitational potential energy is related to

the mass of the object

its height from the ground

the gravitational field strength

formula for potential energy, mass, gravitational field strength and height

Ep=mgh

Ep-potential energy (J)

m-mass (kg)

g-gravitationak field strength (N/kg)

h-height (m)

the kinetic energy of an object is related to

its mass and speed

formula to find kinetic energy, mass and speed

Ek=1/2mv²

Ek-kinetic energy (J)

m-mass (kg)

v-speed (m/s)

work done is a type of energy that is defined as the

energy transferred when a force is moved through a distance

formula for work done, force and distance

Ew=Fd

Ew-work done (J)

F-force (N)

d-distance (m)