course PHY 201
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?
1.5 cm/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? 11.83 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? 2*Vav
What average rate is the velocity of the ball therefore changing?
this question and the one before it require numerical solutions
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?
13.2 m/s
This is average velocity, not average acceleration. Go back to the definition of average acceleration, and reason from that point. The average velocity you found will be helpful.
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