题目
单项选择题
s = ut +½at2 is a formula used in Physics to calculate distance.Make "a" the subject of the formula.
选项
A.a. [math: a=2s−utt2] a= \frac{2s-ut}{t^2}
B.b. [math: a=2(ut−s)t2] a= \frac{2(ut-s)}{t^2}
C.c. [math: a=2(s−ut)t2] a= \frac{2(s-ut)}{t^2}
D.d. [math: a=sut−12t2] a= \frac{s}{ut}- \frac{1}{2}t^2
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标准答案
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思路分析
We start with the given formula s = u t + ½ a t^2 and need to solve for a.
First, subtract u t from both sides to isolate the term with a: s - u t = ½ a t^2.
Next, multiply both sides by 2 to get rid of the ½: 2(s - u t) = a t^2.
Then, divide both sides by t^2 to solve for a: a = 2(s - u t) / t^2.
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