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A car rounds a 75 m radius curve at a constant speed of 18 m/s. A ball is suspended by a string from the ceiling the car and moves with the car. The angle between the string and the vertical is:
Select one:
O a. 0°
O b. 90°
Oc.
1.4°
O d. cannot be found without knowing the mass of the ball
Ое. 24°

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