A car of mass m moves in a horizontal ci...

A car of mass m moves in a horizontal circular path of radius r meter. At an instant its speed is `Vm//s` and is increasing at a rate of a `m//sec^(2)`. Then the acceleration of the car is:

A

`sqrt(v^2/a^2+r`

B

`sqrt(v^2/r+a`

C

`sqrt(v^4/r^2+a^2`

D

`(v^2/r+a)`

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