#$&*
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/sec
A 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?
11.83 cm/sec
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?
• What average rate is the velocity of the ball therefore changing?
The final velocity of this ball is double its average velocity, and the average rate of change is two times the initial velocity.
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?
The avg acceleration is 13.2 m/sec.
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@& This is the average rate at which the position is changing with respect to clock time.
You need to find the average rate at which the velocity changes
You need to use the scheme outlined by the preceding series of questions, of which you answered only the first.*@