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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________.
Note 
Flashcard (23)