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If the velocity v of a particle moving along a straight line decreases linearly with its displacement from `20 m//s` to a value approaching zero at `s = 30 m,` determine the acceleration of the particle when `s = 15 m.`

A

`2/3 ms^(-2)`

B

`-2/3 ms^(-2)`

C

`20/3 ms^(-2)`

D

`-20/3 ms^(-2)`

Text Solution

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The correct Answer is:
D
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