kinetic and potential energy notes
TRANSCRIPT
Kinetic and Potential Energy
Kinetic Energy
Energy of MOTIONIf an object is moving it has KEMeasured using the formula:– KE = mass * velocity2
2
Examples:– Ball Rolling– Car Driving
Potential Energy
Potential Energy is the Energy of POSITION or SHAPEForm of Stored EnergyExamples:– Stretched bow or rubber band– Roller Coaster at top of hill– Gunpowder and food
Gravitational Potential Energy
A specific type of PECreated when you do work on an object by using a force that opposes gravity (lifting)Measured using the formula:– GPE = weight (N) * height (m)
Examples:– Diver on board– Car at top hill– Book on shelf
Mechanical Energy
Total energy of Motion and position of an object.Measured using the formula:– ME = KE + PE
ME always remains for a given objectExample:– Simple Online Pendulum
ME stays the same for bus as it goes down the
hill
ME = KE + PE
The bus at this position on the hill has a very high potential energy and little to know Kinetic Energy
PE = weight * height
KE = (mass * velocity2)/ 2
As the bus travels down the hill its PE decreases and its Kinetic Energy is increasing!
PE = weight * height
KE = (mass * velocity2)/ 2
ME stays the same for bus as it goes down the
hill
ME = KE + PE
At the bottom of the hill the bus has very low PE but very high KE
PE = weight * height
KE = (mass * velocity2)/ 2
ME stays the same for bus as it goes down the
hill
ME = KE + PE