Was the ball doing 550 mph ? Yes, relative to the ground.
...was it actually doing 450 mph forwards ? Yes, relative to the ground.
...did it stop or did it accelerate instantly to 500 mph ? It didn't stop, relative to the ground. It accelerated to 500mph, relative to the ground, over a very short time.
Last edited by: crocks on Sun 4 Apr 10 at 12:44
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