When we're doing the experiment, should our fingers be the same length apart? Because if everyone in your group holds their fingers at different lengths, then the reaction times might not be accurate. -Keivn Meglathery
I agree Kevin. If someone has their fingers closer it may take them more time to react and they can still catch the dollar. Where as someone who has a quick reaction time and fingers far apart may not catch it. -James Gallagher
Everyone has a different reaction time anyway and some people look at signs that the person is dropping it before they do, therefore it is not a completely accurate time anyway. The lab was to teach us to look for signs of when someone is dropping the object and to use a formula we already know to calculate time.
I don't think that he was trying to tell us to look for signs. I believe he wanted us to be able to determine what aspects make a difference in the labs, like something that can interfere with proper collection of data. Instead of measuring actual reaction time, we ended up measuring whether or not someone was clever enough to process when the dollar is about to be dropped.
Noah is right. The point of the lab was to put the formula we came up with to use. This lab was one of the few that we had to find the time because usually we were given the time on the ULI.
The lab was basically a hands-on way of teaching us how to take things that we know and use them to figure out things that we don't know or want to figure out. It's a problem-solving method that he wants us to use in all our labs and outside of the room.
Yeah, for this lab of Hang Time he wants us to do a write up with all of PUKE to show that we understand everything and can apply it. Do we do the PUKE write up for the Drop It Like It's Hot lab too? Or just Hang Time?
My group won't be able to calculate the reaction time yet because we don't have enough data. Does anyone know if we get time to finish the experiment tomorrow?
I believe the average human reaction time is .15-.30 seconds. At least thats what Mr. Crane said in class. Usually the older you get the slower your reaction time.
@ Cathrine, dealing with reactions, the older you get, your reactions don't necessarily get slower. From 2-14, my reactions got quicker, hopefully. Even at 26, professional athletes have exceptional reaction time. I am thinking Mr. Crane ment by older as older than 30 years old is when the difference comes into play. Still the average reaction time for humans above 50 is around .3 seconds or higher.
My reaction time was .15s which he said was good but anything from .15 to .30 is correct. Jut because you have a slower reaction doesn't mean it is because you are older. Some of the kids in my class re younger than me and they got a slower reaction time and when mr. Crane showed us in class his reaction time was really fast and he was the only one who could catch the dollar. Even though he has been practicing a lot he still figured out a trick that has to do with him being able to catch the dollar. For reaction time anything under .15s mr crane said you would have to be super human to be able to catch the dollar, so I'm guessing mr crane has to be a super human. That's just my guess!
While I'm sure that he is super human in some ways, he is not in this aspect. He told our class that he looks at the person who is dropping the bill, not the bill itself. Whenever someone is going to drop the bill for him, Mr. Crane always sees something (he's not sure what) that gives him just enough extra time to catch the dollar. He said that when someone covered their hand, he had much more difficulty catching it. -Kevin Meglathery
It's only bad if you let it bounce off the ground multiple times throughout the trials. If that happened, as Mr. Crane said, you should see your doctor about that. Otherwise, maybe you just weren't paying attention.
How far above the ground was the meter stick? If it was at table height and you were actually paying attention, then we might have a problem. If it was an inch or two off the ground, or if you were distracted, then I think it's ok. -Kevin Meglathery
For seven i got e,f but they were wrong because they both i thought they were both in the negative direction but they are not but they are at a constant speed
Should there always be numbers in our pictures? Is the picture supposed to be an informative diagram or can it be just a drawing of the lab setup with numbers where they are required?
When we're doing the experiment, should our fingers be the same length apart? Because if everyone in your group holds their fingers at different lengths, then the reaction times might not be accurate.
ReplyDelete-Keivn Meglathery
agreed i feel i was stripped of my reaction time due to the inconsistancy of the dfingerlength and the changing of the person dropping it. Josh Leavy
DeleteI agree Kevin. If someone has their fingers closer it may take them more time to react and they can still catch the dollar. Where as someone who has a quick reaction time and fingers far apart may not catch it.
Delete-James Gallagher
Everyone has a different reaction time anyway and some people look at signs that the person is dropping it before they do, therefore it is not a completely accurate time anyway. The lab was to teach us to look for signs of when someone is dropping the object and to use a formula we already know to calculate time.
ReplyDeleteI don't think that he was trying to tell us to look for signs. I believe he wanted us to be able to determine what aspects make a difference in the labs, like something that can interfere with proper collection of data. Instead of measuring actual reaction time, we ended up measuring whether or not someone was clever enough to process when the dollar is about to be dropped.
ReplyDeleteNoah is right. The point of the lab was to put the formula we came up with to use. This lab was one of the few that we had to find the time because usually we were given the time on the ULI.
DeleteThe lab was basically a hands-on way of teaching us how to take things that we know and use them to figure out things that we don't know or want to figure out. It's a problem-solving method that he wants us to use in all our labs and outside of the room.
Deleteshould we puke all over a separate piece of paper and turn it in, or is puke in our notebooks enough?
ReplyDeletehahaa nice puking. but I think having both wouldn't be a bad idea just in case he says he prefers one over the other
DeleteNoah I think just PUKE in your notebook would be fine because we have kept the last few labs we have done in our notebooks
DeleteBut he said a seperate piece of paper because we are turning it in for a grade
DeleteYeah, for this lab of Hang Time he wants us to do a write up with all of PUKE to show that we understand everything and can apply it. Do we do the PUKE write up for the Drop It Like It's Hot lab too? Or just Hang Time?
DeleteNazia I would do both just to show that those labs are sort of related. We used the same equation but just applied it in a different way.
DeleteAlright, thanks Ash!
DeleteReply button not working? Okay.
ReplyDeleteKevin, we would probably include it in the percent error.
~Thomas Black
My group won't be able to calculate the reaction time yet because we don't have enough data. Does anyone know if we get time to finish the experiment tomorrow?
ReplyDeleteDid everyone else get about .15-.30 seconds as the average reaction time?
ReplyDeleteI got .17. What about you?
DeleteI believe the average human reaction time is .15-.30 seconds. At least thats what Mr. Crane said in class. Usually the older you get the slower your reaction time.
DeleteHow much would reaction time change as you get older?
Delete- Catherine Samara
Yeah, .18-.30
Delete~Thomas Black
@ Cathrine, dealing with reactions, the older you get, your reactions don't necessarily get slower. From 2-14, my reactions got quicker, hopefully. Even at 26, professional athletes have exceptional reaction time. I am thinking Mr. Crane ment by older as older than 30 years old is when the difference comes into play. Still the average reaction time for humans above 50 is around .3 seconds or higher.
DeleteMy reaction time was .15s which he said was good but anything from .15 to .30 is correct. Jut because you have a slower reaction doesn't mean it is because you are older. Some of the kids in my class re younger than me and they got a slower reaction time and when mr. Crane showed us in class his reaction time was really fast and he was the only one who could catch the dollar. Even though he has been practicing a lot he still figured out a trick that has to do with him being able to catch the dollar. For reaction time anything under .15s mr crane said you would have to be super human to be able to catch the dollar, so I'm guessing mr crane has to be a super human. That's just my guess!
ReplyDeleteWhile I'm sure that he is super human in some ways, he is not in this aspect. He told our class that he looks at the person who is dropping the bill, not the bill itself. Whenever someone is going to drop the bill for him, Mr. Crane always sees something (he's not sure what) that gives him just enough extra time to catch the dollar. He said that when someone covered their hand, he had much more difficulty catching it.
Delete-Kevin Meglathery
Is it bad/unhealthy that for one of the takes the meter stick bounced before I reacted and I almost let it bounce twice?
ReplyDeleteIt's only bad if you let it bounce off the ground multiple times throughout the trials. If that happened, as Mr. Crane said, you should see your doctor about that. Otherwise, maybe you just weren't paying attention.
DeleteHow far above the ground was the meter stick? If it was at table height and you were actually paying attention, then we might have a problem. If it was an inch or two off the ground, or if you were distracted, then I think it's ok.
Delete-Kevin Meglathery
What did u get for #3?
ReplyDeleteRich would it be a,c,e?
ReplyDeleteA,C,E
ReplyDeleteOk and #4 would be f because e is moving negativily but stops at 0?
DeleteNumber four is B,D,F
DeleteCould you explain why is it because they start at a negative on the y axis?
DeleteIt is because all of those lines are below zero, therefore negative. This works because it is a velocity vs. time graph.
DeleteWhat did anybody get for seven or eight?, and please explain why...
ReplyDeleteFor seven i got e,f but they were wrong because they both i thought they were both in the negative direction but they are not but they are at a constant speed
ReplyDeleteFor seven I got the same thing.
ReplyDeleteHey guys post under the assignment not the reaction time lab....
Deleteok well i believe that it is f because in #4 f is going in the negative direction when e is not.
ReplyDeleteExplain how you got #4?
DeleteWhen we are writing the P.U.K.E.S. of this lab, who exactly do we write them down? Is it set up like a chart or something?
ReplyDeleteIt usually does not matter, as long as you understand it and are able to explain what everything means to someone.
DeleteThen do we label them?
DeleteYes, depends on what you are doing, but it would be the safe thing to do.
DeleteWhat is an example of unknowns and knowns for P.U.K.E.S.
ReplyDeleteI'm pretty sure that knowns are the variables that we already know and that the unknowns are what we're trying to find.
Delete-Kevin Meglathery
Should there always be numbers in our pictures? Is the picture supposed to be an informative diagram or can it be just a drawing of the lab setup with numbers where they are required?
ReplyDelete