<< Chapter < Page Chapter >> Page >

Screen output

When you open the html file in your browser, the text shown in Figure 6 should appear in your browser window.

Figure 6 . Screen output for Listing #2.
At 10 seconds: distance traveled = -1609 feetheight = 8391 feet At 20 seconds:distance traveled = -6435 feet height = 3565 feetThe End

As you can see from Figure 6 , after ten seconds, the rock will have traveled a distance of -1609 feet. (The minus sign indicates downwardmotion.)

Adding this value to the initial height of 10000 feet produces a value of 8391 for the height of the rock at the end of 10 seconds.

Similarly, Figure 6 gives us 3565 for the height of the rock at 20 seconds.

Analysis of the code

The code in Listing 2 begins by defining a function that computes and returns the distance traveled for a rock falling toward the earth for a given timeinterval since release assuming that the initial velocity was zero (the rock was simply dropped).

This function implements the equation shown earlier, and expects to receive the time as an input parameter. It returns thedistance traveled during that time interval.

Note that the interaction of units is shown in the comments with the result that the returned value is in feet.

Call the function twice in succession

Then the code calls that function twice in succession for two different timeintervals (10 seconds and 20 seconds) to determine the distance traveled during each time interval.

In both cases, the distance traveled is added to the initial height of 10000 feet to determine the height of the rock at the end of the time interval.

Also, in both cases, the time interval, the distance traveled, and the resulting height of the rock above the ground are displayed as shown in Figure 6 .

Note again that in all cases, the interactions of the various units are shown in the comments.

A plotting exercise

Let's do another exercise and this time plot the results.

Please prepare your plot board to plot a curve defined by several points. Interpret the grid lines such that you can plot values ranging from 0 to 10000feet on the vertical axis and you can plot values ranging from 0 to 30 seconds on the horizontal axis.

A tactile graph

If you have an assistant who will download the zip file named Phy1050.zip , extract the file named Phy1050a1.svg, and use that file to create a tactilegraph as described in the module named Manual Creation of Tactile Graphics . You can explore the tactile graph instead. Regardless, you should write the script and examine the printed output as described in thefollowing paragraphs.

JavaScript code

Copy the code from Listing 3 into an html file and open it in your browser.

Listing 3 . A plotting exercise.
<!-- File JavaScript03.html --<<html<<body<<script language="JavaScript1.3"<//Function to compute free-fall distance for a given time // interval in seconds.function distance(time){ var g = -32.174; //acceleration of gravity in feet/sec^2var d = 0.5 * g * time * time;//(feet/sec^2)*sec^2 = feet return new Number(d.toFixed(0));}//end function //Compute the height of the rock every two seconds from// release until the rock hits the ground. var t = 0;//secondswhile(t<= 30){ d = distance(t);//distance traveled in feeth = 10000 + d;//height in feet//Don't allow the height to go negative (underground) if(h<0){ h = 0;}//end if//Display time and height at current time. document.write("time = " + t +" height = " + h + "<br/<"); t = t + 2;}//end while document.write("</br<The End")</script<</body<</html<

Questions & Answers

Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
hi
Loga
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
Difference between extinct and extici spicies
Amanpreet Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Good
While the American heart association suggests that meditation might be used in conjunction with more traditional treatments as a way to manage hypertension
Beverly Reply
in a comparison of the stages of meiosis to the stage of mitosis, which stages are unique to meiosis and which stages have the same event in botg meiosis and mitosis
Leah Reply
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Accessible physics concepts for blind students. OpenStax CNX. Oct 02, 2015 Download for free at https://legacy.cnx.org/content/col11294/1.36
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Accessible physics concepts for blind students' conversation and receive update notifications?

Ask