Kinetic and Potential Energy Stores

Movement

________ means energy in an objects kinetic energy store.

The three most common energy stores are

Kinetic energy, Elastic potential energy and gravitational potential energy

Formula for Kinetic energy

E=1/2mv(2)

Example

A car of mass 2500kg is travelling at 20mph

Formula for Gravitational Potential energy

E= mgh

In real life, air resistance acts against all falling objects

causing some energy to be transferred to other energy stores, e.g

Formula for Elastic Potential energy

E=1/2ke(2)

Stretching or squashing

________ an object can transfer energy to its elastic potential energy store.

to be transferred to other energy stores

Air resistance causes energy________

greater its mass and faster its going

________ the more energy there will be in its kinetic energy store

work

Lifting an object in a gravitational field requires________.