24 Feb
2004
24 Feb
'04
8:40 p.m.
On Tue, 24 Feb 2004, Jarek Rzepecki wrote:
Well I think that the problem is closer to the question: Why photons getting out of potential well suffer from red-shift - where their energy go in that case? then to the Doppler...
When you throw a frictionless ball up in the air at initial vertical velocity v_0, it starts off with kinetic energy 0.5 m v_0^2 .
So why does the ball lose (kinetic) energy as it goes up? Why does 0.5 m v^2 get smaller? Where does the energy go?