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## Which One First?

Science brain teasers require understanding of the physical or biological world and the laws that govern it.

 Puzzle ID: #690 Fun: (2.75) Difficulty: (1.16) Category: Science Submitted By: flipakosayo Corrected By: medster99

If I dropped a bowling ball in a bucket of water which is 45 degrees F, and dropped another bowling ball of the same weight, mass, and size in a bucket at 30 degrees F, both of them at the same time, which ball would hit the bottom of the bucket first?

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 (user deleted) Oct 06, 2001 What if the 30 degree bucket doesn't contain water? Zazzar Feb 12, 2002 Thanks, pal. I tried this and got extremely wet. bluetwo May 29, 2002 what if the 30 degree bucket contains salt water, so it isn't frozen? JTJS Nov 07, 2002 clever one electronjohn Nov 12, 2002 Oh am I glad I got that right off the bat or else I would be feeling really dumb right about now. Kinergy Feb 12, 2005 I said 45 degrees, but had no idea the water would be frozen. I'm a Celcius guy. (user deleted) Oct 17, 2005 Lame metallicman Nov 14, 2005 Well pedler, I thought quite the oppisite. A classic trick, I liked it. morning_rain08 Jan 17, 2006 I think this one kind of belongs in the trick section... Dunno. I said they'd both hit at the same time lol. coltonr1 Mar 15, 2006 classic trick but ez jntrcs Apr 01, 2006 oops, all i know is farenheit and i didn't get that. I said heat was irrelevant to gravity. vbguy101 Oct 01, 2006 Right, the freezing point of water is 32 f tansejay Oct 02, 2006 If the water isn't frozen, the correct answer is the hotter one. When the ball is in the water, upthrust acts on it. Since the volume of both balls are the same, the magnituce of upthrust soley depends on the density of the fliud. Since water if more dense when cold, a larger upthrust acts on it, increasing time taken to reach the bottom. labsmith Oct 03, 2006 I got tricked and I feel like a fool. Good teaser. I need to slow down and pay attention. Stormcrafter Nov 08, 2006 I use celcius, always have. I keep hearing all these different farenheit temperatures, but they never stick If I were to hear someone had a temperature of 90 something, I'd call the guy a liar and say that they'd be dead In celcius, water freezes at 0 degrees :-\ dutchymonster Nov 29, 2006 I said 45 deg water thinking the warmer water would be less dense due to the molicules expanding with heat. So I got the answer right, but for the wrong reason! One of the best teasers I have rated for a while - going on my faves list! deadsnakebiting Mar 13, 2007 I was going through these old teasers and hit this one. I am impressed. I usually nail these right off but you led me down the garden path on this one! Great job! PS. I'm not going to whine about salt water, molecules, etc. These are just for people upset with their inability to get the right answer. AndrewWalker Jun 23, 2008 got me the first time I saw it, but this time I got it right away.