if perpetual motion is impossible, why/how do planets orbit and spin continually?
In: Physics
Right now motion diminishes very slowly relative to the intial velocity, and it took a long time to slow down this much. Graphically the line would appear symmetrical along a 45 degree angle. At infinity on the vertical y-axis at the beginning of time on the horizontal x-axis and decrease rapidly until it doesn’t seem to be slowing noticably much when you are in the billions of years. It approaches 0 as the rate of change of the loss of momentum also decreases over time. Have you ever skated on ice? You’d think if you didn’t move for a while you would stop, and you do but it takes a lot longer than you’d think if you just let yourself come to a complete stop while staying straight the whole time.
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