A resistance R newtons to the motion of a car varies directly as the square of the speed S.
(A)write the equation conneting R and S
(B) given that R=25N and S=4.find S given that R=36
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1 answer

(A) R = k S^2
(B) 25 = k * 16 ... k = 25/16
S = √(R / k) = √[36 / (25/16)] = 6 / (5/4) = 24/5 👍
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answered by R_scott
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