Brain Twister #2

**Times Roman** · 02-19-2013, 07:15 PM

You are on an elevator going up at a constant rate of speed when a quarter falls out your pocket. Lovbyts sees this and observes it hitting the floor. How much quicker does it hit as compared to if the elevator were not going up.

Additional info:
the distance from your pocket to the floor of the elevator is 4 feet
the elevator is going up 32 feet per second
The quarter weighs 5.67 grams
It's 80 degrees in the elevator
zero humidity
and it's 3pm Eastern time
You are standing at the equator, and the rate of earth's rotation is 1040mph

If you have worked out the math and know the answer, hold off and let others get a chance. If you are not sure or are guessing, go ahead and give it a shot

Good luck!
---Roman

**GirlyGymRat** · 02-19-2013, 07:16 PM

Originally Posted by Times Roman

You are on an elevator going up at a constant rate of speed when a quarter falls out your pocket. Lovbyts sees this and observes it hitting the floor. How much quicker does it hit as compared to if the elevator were not going up.

Additional info:
the distance from your pocket to the floor of the elevator is 4 feet
the elevator is going up 32 feet per second
The quarter weighs 5.67 grams
It's 80 degrees in the elevator
zero humidity
and it's 3pm Eastern time
You are standing at the equator, and the rate of earth's rotation is 1040mph

If you have worked out the math and know the answer, hold off and let others get a chance. If you are not sure or are guessing, go ahead and give it a shot

Good luck!
---Roman

My head hurting.....

**Times Roman** · 02-19-2013, 07:17 PM

Originally Posted by GirlyGymRat

My head hurting.....

take two aspirin and resharpen your pencil! =)

**ElectraMaddox** · 02-19-2013, 07:20 PM

So is mine...

**austinite** · 02-19-2013, 07:20 PM

The answer is: 6

**Euroholic** · 02-19-2013, 07:21 PM

Whats a quarter?

Im going to say 0

**GirlyGymRat** · 02-19-2013, 07:22 PM

Originally Posted by austinite

The answer is: 6

Be quiet please. My head still hurts. Thx

**Times Roman** · 02-19-2013, 07:23 PM

Now Lobyts would say it's a trick question, cuz aint no damn quarter falling out someone's pocket and hitting the ground before HE makes a grab for it....

.....but that's not the answer! =)

**ElectraMaddox** · 02-19-2013, 07:28 PM

Originally Posted by Times Roman

You are on an elevator going up at a constant rate of speed when a quarter falls out your pocket. Lovbyts sees this and observes it hitting the floor. How much quicker does it hit as compared to if the elevator were not going up.

Additional info:
the distance from your pocket to the floor of the elevator is 4 feet
the elevator is going up 32 feet per second
The quarter weighs 5.67 grams
It's 80 degrees in the elevator
zero humidity
and it's 3pm Eastern time
You are standing at the equator, and the rate of earth's rotation is 1040mph

If you have worked out the math and know the answer, hold off and let others get a chance. If you are not sure or are guessing, go ahead and give it a shot

Good luck!
---Roman

7.5 sec faster?

**GirlyGymRat** · 02-19-2013, 07:32 PM

Originally Posted by ElectraMaddox

7.5 sec faster?

Less the 8 secs.

**Times Roman** · 02-19-2013, 07:33 PM

Originally Posted by ElectraMaddox

7.5 sec faster?

Originally Posted by GirlyGymRat

Less the 8 secs.

warmer.... warmer....

**Times Roman** · 02-19-2013, 07:34 PM

Originally Posted by GirlyGymRat

Less the 8 secs.

Originally Posted by ElectraMaddox

7.5 sec faster?

are you two working out the math or just guessing?

**The Bear 79** · 02-19-2013, 07:35 PM

..........

**GirlyGymRat** · 02-19-2013, 07:35 PM

Originally Posted by Times Roman

are you two working out the math or just guessing?

I did the math. We quick arent we.

**Times Roman** · 02-19-2013, 07:37 PM

Originally Posted by GirlyGymRat

I did the math. We quick arent we.

so your answer is that it will hit 8 seconds quicker due to elevator going up?

**Times Roman** · 02-19-2013, 07:39 PM

Originally Posted by GirlyGymRat

I did the math. We quick arent we.

have you taken into consideration the weight of the quarter?

**Brick** · 02-19-2013, 07:42 PM

Einstein's equivalence principle.

I don't know the math but to the person in the elevator it appears to fall at the same rate and the math says differently.

My educated guess is: the observer will not notice a different rate of fall even though the fall rate changes. The instance from the quarter being stationary in pocket, albeit moving upwards at a constant rate, to falling and hitting the floor has such a small difference that the human eye would not detect a stray from a normal rate of fall

**MickeyKnox** · 02-19-2013, 07:47 PM

Originally Posted by austinite

The answer is: 6

He said to hold off.

TR, I think Austinite should be penalized for not following instructions properly.

**Times Roman** · 02-19-2013, 07:49 PM

Originally Posted by MickeyKnox

He said to hold off.

TR, I think Austinite should be penalized for not following instructions properly.

agree. so I'm thinking a proper punishment is to keep him out of GGR's legs thread for 15 minutes.

(bet he can't even do that?)

**MickeyKnox** · 02-19-2013, 07:50 PM

Originally Posted by Times Roman

agree. so I'm thinking a proper punishment is to keep him out of GGR's legs thread for 15 minutes.

(bet he can't even do that?)

Has he been hanging his hat in there? That ol' hounddog..

**MickeyKnox** · 02-19-2013, 07:51 PM

Incidentally, i dont know the mathematical answer, but i say that there is NO difference in the speed at which the quarter falls to the floor in a moving elevator.

**redz** · 02-19-2013, 07:52 PM

1/8th of a second faster.

**GirlyGymRat** · 02-19-2013, 07:56 PM

Originally Posted by MickeyKnox

Incidentally, i dont know the mathematical answer, but i say that there is NO difference in the speed at which the quarter falls to the floor in a moving elevator.

Why???

**GirlyGymRat** · 02-19-2013, 07:58 PM

Originally Posted by MickeyKnox

Has he been hanging his hat in there? That ol' hounddog..

He hasn't made a single comment.....

**diabolicsoul** · 02-19-2013, 08:00 PM

Just a quick guess before I work out.

I am going to say that it would hit the ground at the same time.

Just because the elevator is moving, the distance between the elevator floor and the coin falling is constant. And the rate of gravity is constant.

Though, you may actually have to do math, but I'm not going to think about that right now lol.

**MickeyKnox** · 02-19-2013, 08:01 PM

GGR,

It goes back to an old math question that was asked a loooong time ago by my brother. And i recall that the speed at which an elevator travels has little to no impact on you as the matter inside. Gravity is not affected. But i honestly dont know what the mathematical equation is to prove it.

He also asked this question, "If you were falling in an elevator and you knew exactly when it was going to hit the ground, could you not simply jump up real quick before impact and not be injured?" Its along the same lines.

**MickeyKnox** · 02-19-2013, 08:01 PM

Originally Posted by GirlyGymRat

He hasn't made a single comment.....

Me neither.

**GirlyGymRat** · 02-19-2013, 08:03 PM

Originally Posted by MickeyKnox

Me neither.

I know

**Times Roman** · 02-19-2013, 08:15 PM

Originally Posted by MickeyKnox

GGR,

It goes back to an old math question that was asked a loooong time ago by my brother. And i recall that the speed at which an elevator travels has little to no impact on you as the matter inside. Gravity is not affected. But i honestly dont know what the mathematical equation is to prove it.

He also asked this question, "If you were falling in an elevator and you knew exactly when it was going to hit the ground, could you not simply jump up real quick before impact and not be injured?" Its along the same lines.

as long as you jumped up fast enough to offset the terminal velocity of the elevator right before the crash, you should be g2g

**MickeyKnox** · 02-19-2013, 08:24 PM

Originally Posted by Times Roman

as long as you jumped up fast enough to offset the terminal velocity of the elevator right before the crash, you should be g2g

What?????? No way sir! You'd crash harder than out of control teenager driving his dad's vette with a 5th of whiskey in him!

**MickeyKnox** · 02-19-2013, 08:25 PM

Its actually a trick question TR. Youre traveling the same speed of the elevator, but even if you "jump up" which you're actually NOT doing, you'll crash and die.

**ElectraMaddox** · 02-19-2013, 08:43 PM

Originally Posted by Times Roman

are you two working out the math or just guessing?

I did a proportion.. I just didn't factor in the difference b.t. The non-moving and moving b.c I was trying to figure out what value I needed to use and I got tired so I half assed it

**t-dogg** · 02-19-2013, 08:46 PM

Trick question

**ElectraMaddox** · 02-19-2013, 08:48 PM

Originally Posted by t-dogg

Trick question

I know I read that after.....

**t-dogg** · 02-19-2013, 08:51 PM

Originally Posted by ElectraMaddox

I know I read that after.....

lol, it wasnt directed at you.

**ElectraMaddox** · 02-19-2013, 08:51 PM

Lol oops

**t-dogg** · 02-19-2013, 08:54 PM

Originally Posted by ElectraMaddox

Lol oops

You are now fined. Do not pass go, and do noy collect 200 dollars.

**lovbyts** · 02-19-2013, 08:56 PM

It never reaches the floor because I catch it and put it into my pocket.

On another note anyone with a pocket that is 4 feet from the ground is pretty damn tall unless it's a short chest pocket.

**ElectraMaddox** · 02-19-2013, 08:58 PM

Originally Posted by t-dogg

You are now fined. Do not pass go, and do noy collect 200 dollars.

Lolllll

**diabolicsoul** · 02-19-2013, 09:32 PM

When are you going to give us the right answer? I still think it's unchanged since essentially, the distance the coin has to travel, and gravity are the only thing that matters in this question, IMO. The weight of the coin doesn't matter because its dropping speed will remain the same whether it's 1 pound or 20 pounds.

The time/temp./earths rotation/ humidity/ elevators speed/ are all worthless and added info. to through us off.

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