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Do you remember the story of the tortoise and the hare? The tortoise and the hare decided to have a race. Everybody, most of all the hare, thought the hare would win the race because he hopped much faster than the tortoise plodded. We could say that the hare usually travelled at a much higher velocity than the tortoise. Velocity is the measure of the amount of distance an object covers in a given amount of time. Here's a word equation that expresses the relationship between distance, velocity and time: Velocity equals distance travelled divided by the time it takes to get there.Confident that his high typical velocity would allow him to cover the race distance in a short amount of time, the hare took a lot of breaks. Looking at our equation, we can see that when time is increased—for any reason—overall velocity goes down. The tortoise never took any breaks: he just kept plodding along. By the time the hare realized that he was way behind the tortoise, it was too late. The tortoise won the race, and we all got the moral “Slow and Steady Wins the Race.” That’s a good lesson but the hare could have won the race (and still taken a few breaks) if he had only completed the experiment you are about to do.Predict when a fast toy car can pass a slower toy car.
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Fecha publicación: 12.5.2016
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