Yeah, Mad, we're pointing at the duck, and you are looking at our fingers.



I know that once the real issue sinks in, and you get it...you'll wonder how you missed it...but, you are missing the point of the question.

Its a runway, and a plane...in a problem such as this...the variables mentioned are the one's to consider.

Saying there is not enough information is a cop out...as there IS enough information, as long as you follow the presented given.

Otherwise, if the quesiton were re-worded to read:

There is a plane on the runway, a girl in the plane blows her nose, can the plane take off?

If you do it your way...the answer is ALWAYS that there is insufficient information...as what if her blowing was a signal for terrorists to blow up the plane? What if the plane had no gas?

etc.

Is 2=2 equal to 4?

Well, what if its 2 elephants, plus 2 lions, equal 4 zebras?

etc.

The problem assumes that we understand that we're testing the concept of the tread mill preventing the take off......

Let's say you just can not answer that type of brain teaser...as you must say things like:

"What if the plane could not fly any way, they didn't say if it has wings, or it does, but maybe they were not designed right, or maybe the pilot is dead, or maybe the stewardess is having trouble inflating the autopilot..."

etc.

OK, fine...no question ever posed has an answer, as there will never be eough information.

You can stop if that's the case, as there are no scenarios that will ever work for you.

For people who CAN solve problems like this...its STILL all about FINALLY understanding that the speed is the speed...as in gps coordinate to gps coordinate, in a given time....because that's what speed IS.

The conveyor belt is designed to confuse you...its a red herring.

Your speed on a tread mill is zero...your EQUIVALENT speed is what ever the speedometer says.

If you are on a tread mill, and I yank you forward with a rope...NO MATTER HOW FAST THE TREAD MILL BELT GOES...you WILL move forward....by the distance the rope pulled you.

If that's unclear...you may NEVER get it.