It is 260 km from Patna to Ranchi by air and 320 km by road. An aeroplane takes 30 minutes to go from Patna to Ranchi whereas a deluxe bus takes 8 hours. (a) Find the average speed of the plane. (b) Find the average speed of the bus. (c) Find the average velocity of the plane. (d) Find the average velocity of the bus.


Total distance travelled by aeroplane=260 km


Total time taken by aeroplane=30 min=0.5 hour


a.


Total distance travelled by bus=320 km


Total time taken by aeroplane=8 hour


b.


c.


d. , since shortest distance i.e displacement from Patna to Ranchi is 260 km.


2