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 Replies: 471 / Views: 34,728 |
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Pillar of the Community
United States
1227 Posts |
I have one from my uncle (a former physics professor)! There are two correct answers, but he got each only once in a 20-year career:
"Nolan Ryan is standing on top of the Empire State Building and throws a baseball at the ground. The building is 102 American storeys, or 1250 feet, tall. Ryan's fastball is officially clocked at 100.9 miles per hour. If the ball is thrown at Ryan's maximum speed with no obstacles in the way, what is the ball's terminal velocity? All of the information you need to answer this question is included in the problem."
You may answer in terms of concrete or theoretical physics; there is one correct answer for each of these branches.
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Rest in Peace
United States
9104 Posts |
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Pillar of the Community
United States
1227 Posts |
Sorry, biggfredd, that's not it. Try again, though!
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New Member
United States
5 Posts |
I dont think it would reach terminal velocity in the amount of time its in the air. BUT since the terminal vilocity of a baseball is 74mph it would probably speed up to 100.9mph then slowly tapper down to 74mph if it was falling more then 1250 ft.
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Rest in Peace
United States
9104 Posts |
 to ccf, wasoby18! Where we discuss coins, paper money, token, and terminal velocity of basebol been bery bery good to me... |
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New Member
United States
5 Posts |
thx biggdredd. I have been reading this site for ages, thought it was about time to make a username :P
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Pillar of the Community
United States
539 Posts |
terminal velocity is 0 (zero). the fall wasn't so bad but that sudden stop at the end sucks
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New Member
United States
0 Posts |
I have two questions from the mensa test that I cannot figure out. Can anyone explain these?...
Question 1: Complete the following sequence:
18,20,24,22,24,25,26,27,28,?
The choices for the answer are:29,30,31,32,33.
Question 2:
What is the next line of numbers:
1211
111221
312211
?
The choices for the answer are:
122113
411221
3122111
3312211
13112221
Can anyone help figure these out and explain them? Thanks!
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Pillar of the Community
United States
1227 Posts |
Weavus got it right! "Terminal velocity" is the velocity at the end of the ball's path--in normalspeak, "the speed when it stops," and a stopped ball is traveling at 0mph.
The theoretical physics answer deals with the question on the level of tachyons, and is "there is no ball, therefore nothing in this question is traveling at any speed." The student who answered my uncle's exam did it with a cheeky "what ball?" and got full marks.
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Pillar of the Community
United States
3453 Posts |
Question number 2: It is easier to explain if I start from the beginning (I am putting spaces in between the answers to help explain it):
Start with the number 1 and say "one 1" = 11
Next is 11 and say "two 1(s)" - 21
Next is 21 and say "one 2 and one 1" - 12 11
Next is 1211 and say "one 1, one 2, two 1s" = 11 12 21
Next is 111221 and say "three 1s, two 2, one 1" = 31 22 11
So next would be 312211
Some times figuring out what comes before helps to figure out what is next.
Remember the numbers are grouped and that is what you are "saying".
(Working on number 1)
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Pillar of the Community
United States
2605 Posts |
Quote:
So next would be 312211 You meant 13112221 I'm impressed! |
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Pillar of the Community
United States
3453 Posts |
Question 1 is stumping me! I keep getting caught up in the fact that they are composite numbers, but then again so are 30, 32 and 33. I need to take a break and come back to it.  |
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Rest in Peace
United States
9104 Posts |
I don't get it: Quote:Quote:
Quick definitions from WordNet (terminal velocity)
â-¸ noun: the constant maximum velocity reached by a body falling through the atmosphere under the attraction of gravity
Weavus got it right! "Terminal velocity" is the velocity at the end of the ball's path--in normalspeak, "the speed when it stops," and a stopped ball is traveling at 0mph. The reason we use parachutes is their terminal velocity is less than what hangs on them, just like the terminal velocity of a human is higher if they roll up into a ball. If the question is "what is the velocity at the end of the drop", yep, that's 0. |
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Pillar of the Community
United States
539 Posts |
in a desperate attempt to remain 'correct' I propose the the two words used in the question terminal and velocity were not meant to be a conjunctive noun but rather an adjective and a noun and thus the terminal is describing the velocity much like pretty coin describes the coin. If that doesn't still make me right then I fall back on the theoretical physics answer...what ball?  |
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Pillar of the Community
United States
3453 Posts |
Quote:
Question 1: Complete the following sequence:
18,20,24,22,24,25,26,27,28,?
The choices for the answer are:29,30,31,32,33.  Anyone? Anyone? (If anyone knows this, please PM me. I think I have it but there is another scenario that keeps tripping me up. Just looking or a clue  ) Edited by CoinsKelly
04/19/2012 2:00 pm
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Replies: 471 / Views: 34,728 |
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Posted 04/17/2012 02:35 am
