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A ball is moving in a circular path of r...

A ball is moving in a circular path of radius 5m. If tangential acceleration at any instant is 10 `m//s^(2)` and the net acceleration makes an angle `30^(@)` with the centripetal acceleration, then the instantaneous speed is

A

`50sqrt3m//s`

B

`9.3m//s`

C

`6.6m//s`

D

`5.4m//s`

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