Originally posted by: DrPizza
Originally posted by: bleeb
Originally posted by: DrPizza
But, to solve it, figure out how far the helicopter travelled in that amount of time at that average speed.
Then, realize the train was travelling 1 hour longer....
If they left the same place, they've travelled the same total distance.
So, use the distance and the 1.8 hours to find the average speed.
Then, write next to your answer: "assuming both travelled on identical paths."
Also you must assume that there was no negative resistance... and we didn't account for acceleration factors, humidity, earth magnetic fields, wind resistance, jet stream and day light savings time.
actually, you wouldn't have to account again for resistance, acceleration, wind, etc., as the speed was given as an average speed. If you average exactly 60 mph on a straight road, for exactly 1 hour, you will have travelled exactly 60 miles. (ignoring relativity, Einsteins - I don't want to deal with "whose hour?"
60 miles - even if there are hurricane force winds blowing, 4 flat tires, and a woman driver - as long as it's 60mph, those factors are already factored in.