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A body moves with constant acceleration. Which relation is used to find displacement when initial velocity, time, and acceleration are known?
A$v = u + at$
B$s = ut + \tfrac{1}{2}at^2$
C$v^2 = u^2 + 2as$
D$s = vt$
Answer & Solution
Correct answer: B. $s = ut + \tfrac{1}{2}at^2$
The displacement formula involving $u$, $a$, and $t$ is $s = ut + \tfrac{1}{2}at^2$. So option B is correct.