A particle is moving in a straight line such that its velocity is increasing at 5,ms ^{-1} per meter

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2.Motion in Straight Line

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A particle is moving in a straight line such that its velocity is increasing at $5\,ms ^{-1}$ per meter. The acceleration of the particle is .......... $ms ^{-2}$ at a point where its velocity is $20\,ms ^{-1}$.

A$100$

B$101$

C$99$

D$103$

(JEE MAIN-2022)

Solution

$\frac{d v}{d s}=5$
$a=v \frac{d v}{d s}=20 \times 5=100\,m / sec ^{2}$

Standard 11

Physics

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