IQ4/24/14 Define energy in your own words. List all of the forms of energy that you could find within this room

ENERGY Energy: is the ability to do work Work is being done whenever some physical force is being used to move an object some distance

Energy All objects contain energy in one form or another Can take the form of – Motion-Sound – Position- Electricity – Heat – Light It can never be destroyed It can only be converted from one form to another

Kinetic Energy = the energy an object possesses because of its motion The amount of Kinetic energy is dependent on the mass of the object in motion and it’s velocity.

Potential Energy The energy of position; stored energy but not being used The amount of energy contained in an object at rest

Examine an example of potential energy A flower pot with a mass of 15 kg is sitting on a window sill 15 meters above the ground. How much potential energy does the flower pot contain? PE = (mass)(gravity)(height) = (15 kg)(9.8 m/s 2 )(15 m) = 2205 kg m 2 /s 2 = 2205 J = 2000 J = 2.2 x 10 3 J

The water at the top has potential energy When water falls to a lower level, the potential energy is converted to kinetic energy.