If I throw a ball up in the air it will eventually reach zero velocity before descending. My question is this: how long will the ball be at zero velocity? It seems to me that this time interval should be infinitesimally small. What am I missing?
"\\text{The ball will have a speed equal to zero during the time :}"
"t = 2\\Delta t"
"\\text{where }\\Delta t \\text{ the absolute error of time measurement}"
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