A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless road. If the banking angle is 45°, the speed of the car is
1) 5 ms–1
2) 10 ms–1
3) 20 ms–1
4) 30 ms–1
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A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless road. If the banking angle is 45°, the speed of the car is
1) 5 ms–1
2) 10 ms–1
3) 20 ms–1
4) 30 ms–1
4) 30 ms–1