course Phy 201
Would like to have feedback. Thanks, Joshua
Week 2 Quiz 1If an object increases velocity at a uniform rate from 5 m/s to 21 m/s in 12 seconds, what is its acceleration and how far does it travel?
Your work has been received. Please scroll through the document to see any inserted notes (inserted at the appropriate place in the document, in boldface) and a note at the end. The note at the end of the file will confirm that the file has been reviewed; be sure to read that note. If there is no note at the end, notify the instructor through the Submit Work form, and include the date of the posting to your access page.
Sketch a velocity vs. clock time graph for an object whose initial velocity is 5 m/s and whose velocity 12 seconds later is 21 m/s. Explain what the slope of the graph means and why, and also what the area means and why.
Change in velocity = 21m/s – 5 m/s = 16m/s
Acceleration = change in velocity/’dt = (16m/s)/12s = 1.3 m/s
‘ds = 21cm/s * 12s = 252cm
The slope of the graph indicates the change in position over the change in time. This slope is increasing as the graph is increasing. The area is equal to the change in position during the time interval.
"
end of document
Your work has not been reviewed.
Please notify your instructor of the error, using the Submit Work form, and be sure to include the date 06-28-2008.
This looks good.
&#Let me know if you have questions. &#