
Originally Posted by
MarineOne
Oh, now THIS will make your head really thump.
Ah yes, I can see that. However there will be both a slowing of momentum from friction and curvature of the linear path due to gravity.
For example, a projectile (arrows, bullets, artillery shells, etc.) will eventually slow down from atmospheric friction which allows gravity to alter the projectiles course. This arguement can also be used for light, since light waves can be altered by gravity (red shift) and be effected by interstellar dust or other celestial bodies that the light would have to pass through.
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