Friday, November 1, 2013

How much energy does a hockey player generate every year from hitting someone else on the ice?



1.  Background Story:
I picked a fermi problem that has to do with hockey. Hockey is one of the most fast pace sports in the world, it is one of the best sports to watch, and a fun sport to learn about. What intrigued me about learning this is a sports website called sports science. Sports science is a video site that tells you and teaches you about the science behind sports or just science of a certain thing about sports, like how fast a hockey puck can be shot and how you shoot a puck faster. So my question is how much energy does a hockey player generate every year from hitting someone else on the ice.





2.  Ask Yourself This:

How many hits do a hockey produce in a year?
What is the most energy produced in a hit from a hockey hitting a hockey player?and who?
How much energy is produced from a hockey player hitting a hockey player in a whole year from all the hit they gave?









3.  Helpful Hints:

Could the energy that is generated from hitting a hockey player with a hockey be enough to light a house?What is the most energy produced from hitting a hockey player with a hockey player?
ANSWER:The amount of energy produced from the collision is equal to 1114 joules. This collision produces enough energy to shoot a puck 11419 feet. The puck would initially be moving at a speed of 183 mph. The stopping force is 803 pounds. This is enough energy to light a 60 watt lightbulb for seconds. (http://www.exploratorium.edu/hockey/checking2.html)
How much energy is produced from hitting a hockey player with a hockey player in a whole year? How many hits does a hockey player produce in a year.
ANSWER: Well a hockey player gets ten good hits a game and there is about 100 games a year, So 1114 joulesx1000=1,114,000 joules. In kilowatts=  0.00030944444444kWh.

b.
How much energy is produced from hitting a hockey player with a hockey player in a whole year?
ANSWER: Well a hockey player gets ten good hits a game and there is about 100 games a year, So 1114 joulesx1000=1,114,000 joules. In kilowatts=  0.00030944444444kWh.(Url for the conversion of joules to kWhhttp://www.rapidtables.com/convert/energy/Joule_to_kWh.htm)
Well what I did was take how much energy a hockey player produced in one hit with another hockey player, in joules. Then I estimated how many hits and games there were in a year, and there was about ten good hits in one game and there is about 100 games in a year, so 10x100=1000 Then I multiplied 1114 joulesx1000 which equals 1,114,000 joules. Last, I turned joules into kilowatts-hours, and got 0.0003094444444 kWh.




4.  Construct a Formula:

Well what you would have to do is find the joules of the energy produce in one hit. Then find the games played in a year, then the hits in a game then multiplye them for the hits in a year.

JOULES    GAMES   HITS  
-------------X-----------X--------X
1HIT          1YEAR    GAME






5.  Messy Math:

     1114J     100G     10hit      1,114,000joule
------------X-----------X---------X -------------------
      1H           1Y          1g             1Y










6.  Answer:
The answer is 1,114,000 joules or .0003094444444kWh of energy for 1000 hits from and hockey player hitting a hockey player. A hockey player generates about .0003094444444 kWh of energy a year from hitting another hockey player, Or 3.094444444x10^3 kWh. Well 8,460,000 joules can light a 100 WATT light bulb for 24HRS. So sense 3.094444444x10^3kWh equals 1,114,000 JOULES, then 1,114,000 joules can light a light bulb for about 5 hours.

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