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The velocity of a particle moving in a s...

The velocity of a particle moving in a straight line is decreasing at the rate of `3 m//s` per metre of displacement at an instant when the velocity is `10 m//s.` Determine the acceleration of the particle at this instant.

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The correct Answer is:
B, C
`(dv)/(ds)=-(3 m//s)/m`
`a=v.(dv)/(ds)`
`=(10)(-3)`
`=-30 m//s^2`
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