A car is travelling with linear velocity...

A car is travelling with linear velocity v on a circular road of radius r. If it is increasing its speed at the rate of `a` metre/`sec^2`, then the resultant acceleration will be

A

`sqrt(v^2/r2-a^2`

B

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

C

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

D

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

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