Strachan Physics - Ep, Ek, and the Law of Conservation of...
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Ep in this context means gravitational Ep near Earth's surface due gravitational field.: Ep = mgh Ek is the kinetic energy of moving molecules and for a large mass Ek = 1/2 mv 2 The Law of Conservation of Energy: total energy of the universe before and after something Happens must remain constant. Epo + Eko = Epf + Ekf + Eh A rock is dropped from height 15 m what speed has it at height 5.0 m (assume no air resistance)? Ep, Ek, and the Law of Conservation of Energy Tuesday, December 06, 2011 1:40 PM E W P Page 1
Transcript of Strachan Physics - Ep, Ek, and the Law of Conservation of...
Ep in this context means gravitational Ep near Earth's surface due gravitational field.:
Ep = mgh
Ek is the kinetic energy of moving molecules and for a large mass
Ek = 1/2 mv2
The Law of Conservation of Energy: total energy of the universe before and after something Happens must remain constant.
Epo + Eko = Epf + Ekf + Eh
A rock is dropped from height 15 m what speed has it at height 5.0 m (assume no air resistance)?
Ep, Ek, and the Law of Conservation of EnergyTuesday, December 06, 20111:40 PM
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Potential energies: there is no set zero value for potential energies, the truth is we cannot measure the exact Ep of anything. We can only measure if an object has a difference in Ep between two states.
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