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NEET 1989 (AIPMT) · Units & Dimensions

Units & Dimensions question from NEET 1989 (AIPMT)

Q116NEET 1989 · AIPMTEasy

Units & Dimensions

If $x = at + bt^2$ , where $x$ is the distance travelled by the body in kilometers while $t$ is the time in seconds, then the units of $b$ is

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Answer: (c)

Each term must have the unit of $x$ , i.e. km.
$bt^2 \to \text{km} \Rightarrow b \to \frac{\text{km}}{\text{s}^2}$
So the answer is (c) $\text{km/s}^2$ .

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