aisa kon sa desh h jaha ek bhi traffic signal nhi h?

Abdul, while driving to school, computes the average speed for his trip to be 20 km h^(-1) . On his return trip along the same route, there is less traffic and the average speed is 30 km h^(-1) . What is the average speed for Abduls trip ?

A circular curve of a highway is designed for traffic moving at 72km//h . If the radius of the curved path is 100m , the correct angle of banking of the road should be given by :

A circular curve of a highway is designed for traffic moving at 72 km/h. if the radius of the curved path is 100 m, the correct angle of banking of the road should be given by: