Posted: Mon Sep. 20, 2010 9:22 pm
Ken, When an object is pushed in the direction of motion, it gains momentum and energy, but when the object is already traveling near the speed of light, it cannot move much faster, no matter how much energy it absorbs. Its momentum and energy continue to increase without bounds, whereas its speed approaches a constant value?the speed of light. This implies that in relativity the momentum of an object cannot be a constant times the velocity, nor can the kinetic energy be a constant times the square of the velocity. So in this case if you get to the Pinnacle before dark you'll have to ride fast to be done before it gets dark or bring lights.
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