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formal
#21
Aug7-11, 09:24 AM
P: 27
Quote Quote by Dickfore View Post
It is a formal definition.
Potential energy is not operationally defined physical quantity, but a derived quantity.
Thank you!
That is just what worried me.It really did not make much sense.
Now could you comment the two examples I made.
Is KE = 2.25x 10 ^7 J, final v= 1.8x 10^ 4 m/s, 18 Km/ sec if electron is at rest ? and much more if it is not?

And in a cyclotron why the increase in KE is the same at every passage even if speed is always different?
(P.S. should we say derived or derivative quantity?)