A motorcycle has a velocity of 15 m/s, due south (observed by a police officer standing on the side of the road) as it passes a car with a velocity of 24 m/s, due north. The same officer observes the velocity of the car. What is the magnitude and direction of the velocity of the motorcycle as seen by the driver of the car?
The maximum speed at which a car can turn round a curve of 40 m radius on a level road is: (Given: coefficient of friction between the tyres and road is 0.5)
A car has to move on a level turn of radius 45 m. If the coefficient of static friction between the tyre and the road is 2.0, find the maximum speed the car can take without skidding.