PHIL 120W Lecture Notes - Descriptive Ethics, Egotism, Falsifiability

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aquamarinehedgehog675

1 Oct 2012

School

Simon Fraser University

Department

Philosophy

Course

PHIL 120W

Professor

Sam Black

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Document Summary

What people do, not how they should act. We act morally only because we want to feel good about ourselves. I did it to get peace of mind, don"t you see? . Weird to say sacrificing yourself to save people from a bomb is desirable. Being rational vs. rationalization: being rational making excuses, rationalization impartial / objective. Redefine motives no way to verify it = no meaning to it: unfalsifiable any good theory should be falsifiable (it"s empty if it"s unfalsifiable) Aim to work hard on a farm and you get in shape from it, end up feeling good about it. Stronger = the result or by-product of your original aim: aim = to work hard on farm. Doesn"t mean you can do anything; act logically. Doesn"t say you can"t help people don"t help others = they won"t help you. Problems: uses people as tools, endorses bad actions consequences are too morally horrifying.

Related Questions

When the twin Mars exploration rovers, Spirit and Opportunity, setdown on the surface of the red planet in January of 2004, theirmethod of landing was both unique and elaborate. After initialbraking with retro rockets, the rovers began their long descentthrough the thin Martian atmosphere on a parachute until theyreached an altitude of about 16.7 m. At that point a system of fourair bags with six lobes each were inflated, additional retro rocketblasts brought the craft to a virtual standstill, and the roversdetached from their parachutes. After a period of free fall to thesurface, with an acceleration of 3.72m/s^2 , the rovers bouncedabout a dozen times before coming to rest. They then deflated theirair bags, righted themselves, and began to explore thesurface.
The figure shows a rover with its surrounding cushion of air bagsmaking its first contact with the Martian surface. After a typicalfirst bounce the upward velocity of a rover would be 9.92 m/s at anangle of 75.0 degrees above the horizontal. Assume this is the casefor the problems that follow.

What is the maximum height of a rover between its first and secondbounces?
148
2.58
12.3
4.68

When the twin Mars exploration rovers, Spirit and Opportunity, setdown on the surface of the red planet in January of 2004, theirmethod of landing was both unique and elaborate. After initialbraking with retro rockets, the rovers began their long descentthrough the thin Martian atmosphere on a parachute until theyreached an altitude of about 16.7m . At that point a system of fourair bags with six lobes each were inflated, additional retro rocketblasts brought the craft to a virtual standstill, and the roversdetached from their parachutes. After a period of free fall to thesurface, with an acceleration of 3.72 m/s^2, the rovers bouncedabout a dozen times before coming to rest. They then deflated theirair bags, righted themselves, and began to explore thesurface.
The figure shows a rover with its surrounding cushion of air bagsmaking its first contact with the Martian surface. After a typicalfirst bounce the upward velocity of a rover would be 9.92 m/s at anangle of 75.0 degrees above the horizontal. Assume this is the casefor the problems that follow.

How much time elapses between the first and second bounces?
5.33
2.58
5.15
1.38

Could you please proofread and correct scientifically andgrammatically my work, thanks ^_^

Here itis:

The percentage error was found to be 0.186% and 6.66%respectively.

This implies that the predicted value of the freefall accelerationis fairly accurate while the predicated value of deceleration isnot as much. The encountered errors were due to severalexperimental and human limitation was that the experiment involved.The experimental limitation was due to the uncertainty of theclinometer which was Â± 0.5o.

I.e. In our calculation, a difference of 0.5o can lead to adifference of 40 - 80 cm in height as shown below:

The human limitations was due to the human eye being unable todetect the exact point on the track at which the gondoladecelerates. This is because the braking happened very quickly.This adds an uncertainty to the location of deceleration when theangels are being measured.

In addition, the human ability cannot decide on the exact period oftime at which the gondola freefalls or decelerates. This is due tothe human reaction speed being unable to exactly determine thestart time of the momentary freefall and deceleration. The timetaken for humans to react cannot be measured thus it cannot besubtracted from the findings to get an accurate timing.

All of these limitations that have affected the accuracy of theresults could be avoided to some extent by marking the exact zonesrequired on the track of the giant drop as well as using anelectronic angle measurer to measure the angles . Additionally, theusage of an electronic timer to measure periods of the freefall anddeceleration is also suggested.

During the analysis, finding an average to the deceleration in theaccelerometer reading (using Logger Pro) was only estimated usingthe human naked eye. This is because an average could not be takenelectronically. Thus, there is also some uncertainty involved inthe theoretical value.

NOTE:

The value for freefall acceleration obtained from thevideo-analysis technique was 9.754 Â± 0.3237 m/s2. 9.754 m/s2 has apercentage error of :
0.469%

This value indicates it is fairly accurate and can be used as aconforming result to the theoretical value. The error involved isdue to the fact that the video was shaking, thus plotting thevelocity/ time graph of the gondola at different times wasnegatively affected; although the axes was roughly re-set at everyframe.

PHIL 120W Lecture Notes - Descriptive Ethics, Egotism, Falsifiability

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