A car of mass \(1000\) kg negotiates a banked curve of radius \(90\) m on a frictionless road. If the banking angle is of \(45^\circ,\) the speed of the car is:

1. \(20\) ms–1 2. \(30\) ms–1
3. \(5\) ms–1 4. \(10\) ms–1
Subtopic:  Banking of Roads |
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