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A particle is moving on a circular path of radius 1 m with 2 m/s. If speed starts increasing at a rate of `2m//s^(2)`, then acceleration of particle is

A

`2m//s^(2)`

B

`4m//s^(2)`

C

`2sqrt(5)m//s^(2)`

D

`8m//s^(2)`

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