Un barco pequeño sale de un puerto y se mueve a 36 km/h en línea recta a 30º al noroeste durante 40 min. Luego de eso se detiene, pero aparece una pequeña corriente que mueve el barco a 5 km/h hacia el oeste. La tripulación del barco se entera de la corriente 3 horas después de que empezó a actuar, en ese momento deciden volver al puerto con la misma rapidez de 25 km/h y viajando en línea recta

the design of a ski jumping suit involves a trade-off between giving the skiers lift to get higher jumps and ensuring the skier does not face a lot of drag before the jump itself. an expansive suit may to lift the skier higher, but at the same time, it will also increase the air resistance. higher air resistance as the skier goes down the slope limits the speed of the jump. a big suit also increases the risk of losing balance or control, especially if there's a strong gust of wind. while technologically enhanced suits a lot, clothing is not the only factor in a ski jumper’s success. gathering speed while skiing down the slope, ensuring good speed on the ramp, and maintaining good body posture and form in the air all contribute to a ski jumper's success.

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