What is the maximum speed with which a 1200-kg car can round a turn of radius 90.0 m on a flat road if the coefficient of static friction between tires and road is 0.70? 2. Is this result independent of the mass of the car?

The value is

Yes

Explanation:

From the question we are told that

  The mass of the car is  

    The  radius  is

    The coefficient of static friction is  

Generally at maximum speed the centripetal force acting on the car is equal to the friction force on the car

So

=>  

=>  

=>    

Yes the value is independent of the mass because from the equation above we see that v is independent of mass

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

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