Quote:
Originally Posted by CoachPaul
In physics, a stop is mandatory for any change of direction. It's impossible to change directions without a momentary stop. Momentum is zero, even if for a micro second.
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In a world of 2 dimensions, you are correct.
In real life -- this is completely false.
Imagine holding the ball in your hands and making a complete circle with it. You are constantly changing directions, and at one point you stop going up and start coming down (and at another point, vice versa) ... but you never stopped.