course phy 121
An object travels a distance of 32 cm in 17.6 seconds from start to finish. If its acceleration is uniform and its initial velocity zero, then what are its average velocity, acceleration and final velocity?
Average velocity is 1.82 cm/s
This is correct.
Acceleration 1.82cm/s
This is your average velocity, not your acceleration.
Final velocity not positive on how to find this
At the link
03-03-2009_____Assignment_2_problem_1
on your access page I posted a response to the problem that logically precedes this one, and asked some additional questions designed to lead you along the path to the solution, and requested your answers. You should answer those questions and submit your response in a copy of that document.
The present problem is of the same type as that one, and once you understand that solution you'll understand how to modify this one.
For easy reference, here is a copy:
course phy 121
If the velocity of the object changes from 4 cm / sec to 16 cm / sec in 8 seconds, then at what average rate is the velocity changing? 1.5cm/sA ball rolling from rest down a constant incline requires 8.2 seconds to roll the 97 centimeter length of the incline.
?What is its average velocity? 11.83cm/s
An object which accelerates uniformly from rest will attain a final velocity which is double its average velocity.
?What therefore is the final velocity of this ball? 23.66cm/s
At what average rate is the velocity of the ball therefore changing? 17.75cm/s
Your first two answers are correct. This one is not and it isn't clear how you obtained it.
What is the definition of the average rate of change of velocity with respect to clock time?
How does that definition apply to this question?
An automobile accelerates uniformly down a constant incline, starting from rest. It requires 10 seconds to cover a distance of 132 meters. At what average rate is the velocity of the automobile therefore changing? 19.8cm/s
This is the average rate of change of position with respect to clock time, not the average rate of change of velocity with respect to clock time. You need to follow the line of reasoning demonstrated by the preceding series of problems.
Do your best to answer the questions posed above, and be sure to include your best explanation. Don't get bogged down on this. Do your best in a reasonable time (say, 30 minutes) and send me the best responses you can. When I get that information I'll be able to give you further assistance.
&#Please see my notes and submit a copy of this document with revisions and/or questions, and mark your insertions with &&&& (please mark each insertion at the beginning and at the end). &#