To find the maximum velocity you have to differentiate the function respect to r.
v = k(R - r)r^2 = kRr^2 - krr^2 = kRr^2 - kr^3
k and R are constants.
=> v' = 2kRr - 3kr^2 = kr(2R - 3r)
maximum velocity => v' = 0 => kr(2R - 3r) = 0
r = 0 or 2R - 3r = 0 => r = 2R / 3
Answer: r = 2R / 3
USE G O O G L E you will get your answer quicker than a jiffy on a stick:)
The answer to your question is 0.469
This is my answer. 0 < x < 0,5
Answer:2
Step-by-step explanation:
