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The radius of a circular and leveled car...

The radius of a circular and leveled car race-track is increased 4 times. What would be the change in the maximum velocity achievable by a car? There is no change in the friction.

A

It increases by a factor of 4

B

It decreases by a factor of 1.414

C

It reduces by a factor of 2

D

It increases by a factor of 2

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