Esto es una discusión · 4 respuestas
Tengo aquí un problemon de carácter matemático.
Pero mi primer problemon es: No sé cómo decirlo enteramente
en español. Así que, voy a hacerlo en Inglés, if I may.
Two trains were heading toward each other on a collision course along the same
tracks (rieles). One was travelling at a constant speed of 75 mph (miles per hour),
the other at 85 mph.
At the same time, a fly was travelling continously back and forth between the two
on-coming trains, at a constant speed of 80 mph.
Then, at the end of two hours, the two trains finally collided head-on, thereby
crushing the fly between them.
What is the total distance travelled by the fly before it was crushed between
the two trains?
ojo: Este problemon no es tan dificil como os parezca.
Just think it out very carefully.
Thanx y saludos.
I don't think the direction the fly was flying along has much to do here, it was moving at constant speed (80 km/h) during two hours.
e = v * t = 80 km/h * 2 h = 160 km
irrelevance of the direction of flight in a simple, easy to understand manner without using any "arithmetic". [H]
So, to put your answer in simple terms: "If one drives his car at the constant speed of 80 mph, at the end of 2 hours he will have covered a total distance of 160 miles. It doesn't matter whether he drives back and forth, zig-zagging or in one straight line. The total distance covered in 2 hours will be the same."
Gracias. 'ta luego.
Hay gente esperando para ofrecerle ayuda.