Question

a bus seems to be travelling slower when our bus overtakes other but the bus seems to be travelling when it is coming from the opposite direction why?

Answer 1

Explanation:

Its because of the difference in speed,if you are travelling to the same direction as a vehicle,the speed percieved of the other vehicle, would be the difference between yours and his.(this is for overtaking).

Answer 2

The observation that in overtaking bus seems to be travelling slower but  seems to traveling fast when coming from opposite direction is due to -

• When two objects are moving in same direction , the relative velocity or observed velocity from one object to another is equal to the difference of the velocities of the objects .

• When two objects are moving in opposite direction , the relative velocity  is equal to the sum of the velocities of the objects .