course Phy 201
I still believe that I am not exactly understanding the concept of average rate of an object's velocity that has changed. If you could give me some feedback on what i've turned in i'll complete another problem if need be.
If the velocity of the object changes from 2 cm / sec to 10 cm / sec in 10 seconds, then at what average rate is the velocity changing?The object's average rate of it's velocity is changing is 1.25cm/s
A ball rolling from rest down a constant incline requires 6 seconds to roll the 61 centimeter length of the incline.
What is its average velocity?
The ball's average velocity is 10.1667 cm/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?
The final velocity of this ball is 20.33 cm/s
What average rate is the velocity of the ball therefore changing?
The velocity of the ball is changing at an average rate of 3.33 (repeating) cm/s
The number is pretty close, though not exactly correct.
You don't show how you calculated the average rate of change of the ball's velocity with respect to clock time.
&#What is the initial velocity on this time interval? What is the final velocity? How long does the time interval last? What therefore is the average rate of change of velocity with respect to clock time? &#
An automobile accelerates uniformly down a constant incline, starting from rest. It requires 9 seconds to cover a distance of 124 meters. At what average rate is the velocity of the automobile therefore changing?
The average velocity of the automobile is 13.7778 m/s. The final velocity is 27.5556 m/s. The average rate of velocity that the automobile is changing is by 3.06173.
There are no units in your answer and you can't shown you calculations. Your number appears right but your solution should connect your result to the problem and to the definition of the average rate of change of velocity with respect to clock time, and every quantity at every step of your calculations should be expressed in its appropriate units.