Some sources of error include the human reaction time, parallax error, and people not starting the timer when the starters pistol blows but right after. The errors, besides the restriction of human reaction time which is .2 s, are marginal. To correct for the errors you could assign two people per each marker, stand straight behind the marker, and look at the smoke of the starters pistol not the sound of it.
Some sources of error are human reaction time (.2 s), people basing their start time off of the sound of the starters pistol, and parallax error. An error introduced is the human reaction time of .2 seconds and the speed of sound vs. light. To fix these errors, place two students at each marker and have them stand behind it to help with human error, and instead of listening for the starters pistol look for the flash/smoke that comes out of it. J.C.
Some sources of error would be the human reaction speed on .2 seconds, the speed of sound versus the speed of light, and the parallax error. To lower the percent of error from the reaction speed and the time the stopwatch is started, one could watch for the light, or, smoke that comes from the starters pistol because the speed of light travels faster than the speed of sound. To reduce the percent of error in the parallax error, one could look at the line the person is running at a perpendicular angle and have the meter mark of which time they are to record in front of them and maybe have more people time a single mark to get the average of the times.
There are several factors that could lead to errors in this lab. The obvious one is human error. The reaction time for the average human is .2 seconds. This means that on average most of the "lapped" times would be off by plus or minus .2 seconds. Another human error would be the angle at which the timer is standing. If the timer is standing at an angle to the line, the timer wont clearly see the runner cross the line. Lastly, the time it takes for the sound of the starting pistol to reach the last timer (who is the one marking when the runner finishes the race) is about .345 seconds. This will cause his time to be off by approximately .345 seconds.
There are many sources of error that could be found in this lab. This includes human reaction time, parallax error, and the error of the speed of sound vs light. Human reaction time introduces an error of +/-.2 seconds. The speed of light is much faster than the time that it takes for the sound of the starters pistol to travel to the human ear. We could correct for these errors by using motion sensors to get an accurate start and finish time. In order to eliminate the parallax error, we could place each sensor perpendicular to the runner.
Some sorces of error are the human reaction time, the speed of light verses the speed of sound, and the parallax error. The amount of error for the human reaction time is .2s. Also, the speed of sound is slower than the speed of light in the starters pistol, which introduces more room for error. Although it isn't much, it is still error. Also, the parallax error intoduces some error, depending on the angle the timer is to the marker. The human reaction time cannot be fixed, for it is human nature. The error of the speeds of sound and light can be fixed by starting when the person sees the light of the pistol rather than the sound of it. Lastly, the parallax error can be fixed if the timer is perpendicular to the marker. To help fix all of these errors, there can be two people at each marker to have even more accurate times.
Because of errors like parallax error, human error which is .2 seconds, the speed of light, which is 186,000 miles per second, as well as the speed of sound, which travels 345 meters per second, errors are very much likely to occur. To reduce the amount of errors, there are slight changes that can be made. Instead of starting when the pistol is heard, the runner and timers can begin when they see the smoke. Also, the new devices that connect the pistol to a special timer can be used. If the new device is not available a motion sensor can be used. The parallax error can be reduced if the timer stands directly perpendicular to the masking tape in the lab. Those are some ways to make the lab more precise.
The possible sources of error that could've affected variables in the lab were human error, reaction time and parallax error. The reaction time of .2 seconds would effect the time recorded due to the fact that each person starts the timer as they react to the starter's pistol. Another source of error is that the timer could not accurately calculate the exact time the runner reached the set distance. We can correct these errors by adding more timers at each distance so we can compare data to be more accurate
The errors in the lab include the human reaction time of the runner as well as the human reaction time of the person who sets the time. The human reaction time difference is a difference of .2s. The errors can be reduced by focusing on the light or smoke from the starter pistol instead of the sound because light waves travel faster than sound waves. If the runner and the person who sets the time focus on the light waves that will reduce the error percentage.
the sources if error in the lab came from human reaction time. The reaction time of the runner and the reaction time of the timer. You could solve this problem by eliminating humans from the equations. For example instead of a person recording the time of the runner you could have a motion sensor record the time to make it more accurate and it would eliminate the error from human reaction time.
Some sources of error in the lab are human reaction time which is .2 seconds, parallax error, and the speed of light and sound. How much parallax error there is depends on where the person is positioned. To correct these errors you could have multiple people at one spot taking the times. Also, the people could be directly next to the runner. To correct the sound error look for the flash or smoke instead of listening for the sound.
There can be several sources of error in this lab; human reaction time, the speed of sound, and parallax error can all have adverse effects on the results of the experiment. The average human reaction time is 0.2 seconds; therefore, every time recorded in the lab has an error of ± 0.2 seconds. It would have been better to record the time with some sort of motion-sensing timer or a slow motion camera. The speed of sound can lead to an error in this lab because the timers that were located farther away from the starter pistol shot heard it later than those stationed closer to the starting line. In order to combat this error, the timers should have started their clocks at the sight of the starter pistol shot rather than its sound. Parallax error is an important factor in this experiment because the angle of the timers' reference points affected their perceptions of when the runner passed their respective meter markers. Therefore, timers should have stood perpendicular to the race track.
Some sources of error include the human reaction time, parallax error, and people not starting the timer when the starters pistol blows but right after. The errors, besides the restriction of human reaction time which is .2 s, are marginal. To correct for the errors you could assign two people per each marker, stand straight behind the marker, and look at the smoke of the starters pistol not the sound of it.
ReplyDeleteSome sources of error are human reaction time (.2 s), people basing their start time off of the sound of the starters pistol, and parallax error. An error introduced is the human reaction time of .2 seconds and the speed of sound vs. light. To fix these errors, place two students at each marker and have them stand behind it to help with human error, and instead of listening for the starters pistol look for the flash/smoke that comes out of it.
ReplyDeleteJ.C.
Some sources of error would be the human reaction speed on .2 seconds, the speed of sound versus the speed of light, and the parallax error. To lower the percent of error from the reaction speed and the time the stopwatch is started, one could watch for the light, or, smoke that comes from the starters pistol because the speed of light travels faster than the speed of sound. To reduce the percent of error in the parallax error, one could look at the line the person is running at a perpendicular angle and have the meter mark of which time they are to record in front of them and maybe have more people time a single mark to get the average of the times.
ReplyDeleteThere are several factors that could lead to errors in this lab. The obvious one is human error. The reaction time for the average human is .2 seconds. This means that on average most of the "lapped" times would be off by plus or minus .2 seconds. Another human error would be the angle at which the timer is standing. If the timer is standing at an angle to the line, the timer wont clearly see the runner cross the line. Lastly, the time it takes for the sound of the starting pistol to reach the last timer (who is the one marking when the runner finishes the race) is about .345 seconds. This will cause his time to be off by approximately .345 seconds.
ReplyDeleteThere are many sources of error that could be found in this lab. This includes human reaction time, parallax error, and the error of the speed of sound vs light. Human reaction time introduces an error of +/-.2 seconds. The speed of light is much faster than the time that it takes for the sound of the starters pistol to travel to the human ear. We could correct for these errors by using motion sensors to get an accurate start and finish time. In order to eliminate the parallax error, we could place each sensor perpendicular to the runner.
ReplyDeleteSome sorces of error are the human reaction time, the speed of light verses the speed of sound, and the parallax error. The amount of error for the human reaction time is .2s. Also, the speed of sound is slower than the speed of light in the starters pistol, which introduces more room for error. Although it isn't much, it is still error. Also, the parallax error intoduces some error, depending on the angle the timer is to the marker. The human reaction time cannot be fixed, for it is human nature. The error of the speeds of sound and light can be fixed by starting when the person sees the light of the pistol rather than the sound of it. Lastly, the parallax error can be fixed if the timer is perpendicular to the marker. To help fix all of these errors, there can be two people at each marker to have even more accurate times.
ReplyDeleteBecause of errors like parallax error, human error which is .2 seconds, the speed of light, which is 186,000 miles per second, as well as the speed of sound, which travels 345 meters per second, errors are very much likely to occur. To reduce the amount of errors, there are slight changes that can be made. Instead of starting when the pistol is heard, the runner and timers can begin when they see the smoke. Also, the new devices that connect the pistol to a special timer can be used. If the new device is not available a motion sensor can be used. The parallax error can be reduced if the timer stands directly perpendicular to the masking tape in the lab. Those are some ways to make the lab more precise.
ReplyDeleteThis comment has been removed by the author.
ReplyDeleteThe possible sources of error that could've affected variables in the lab were human error, reaction time and parallax error. The reaction time of .2 seconds would effect the time recorded due to the fact that each person starts the timer as they react to the starter's pistol. Another source of error is that the timer could not accurately calculate the exact time the runner reached the set distance. We can correct these errors by adding more timers at each distance so we can compare data to be more accurate
ReplyDeleteThe errors in the lab include the human reaction time of the runner as well as the human reaction time of the person who sets the time. The human reaction time difference is a difference of .2s. The errors can be reduced by focusing on the light or smoke from the starter pistol instead of the sound because light waves travel faster than sound waves. If the runner and the person who sets the time focus on the light waves that will reduce the error percentage.
ReplyDeletethe sources if error in the lab came from human reaction time. The reaction time of the runner and the reaction time of the timer. You could solve this problem by eliminating humans from the equations. For example instead of a person recording the time of the runner you could have a motion sensor record the time to make it more accurate and it would eliminate the error from human reaction time.
ReplyDeleteSome sources of error in the lab are human reaction time which is .2 seconds, parallax error, and the speed of light and sound. How much parallax error there is depends on where the person is positioned. To correct these errors you could have multiple people at one spot taking the times. Also, the people could be directly next to the runner. To correct the sound error look for the flash or smoke instead of listening for the sound.
ReplyDeleteThere can be several sources of error in this lab; human reaction time, the speed of sound, and parallax error can all have adverse effects on the results of the experiment.
ReplyDeleteThe average human reaction time is 0.2 seconds; therefore, every time recorded in the lab has an error of ± 0.2 seconds. It would have been better to record the time with some sort of motion-sensing timer or a slow motion camera.
The speed of sound can lead to an error in this lab because the timers that were located farther away from the starter pistol shot heard it later than those stationed closer to the starting line. In order to combat this error, the timers should have started their clocks at the sight of the starter pistol shot rather than its sound.
Parallax error is an important factor in this experiment because the angle of the timers' reference points affected their perceptions of when the runner passed their respective meter markers. Therefore, timers should have stood perpendicular to the race track.