Passengers sitting in a moving train are in____ with respect to platform, but in____with respect to co-passengers in the train ?

A man is sitting in a moving train, then :

A passenger sitting in a bus moving along a circular path experiences a force which is

A passenger in a moving bus appears to be in a state of rest with respect to _____.

Two trains A and B are moving with same speed of 100km//hr .Train A moves towards east and train B moves towards west.An an instant when the trains are moving side by side, an aeroplane files above the trains horizontally.For the passengers in the train A , the plane appears to fly from North to South direction.For the passengers in the train B , the plane appears to fly in a direction making an angle 60^(@) to North-South direction.

A passenger train and a goods train are running in the same direction on parallel railway tracks. If the passenger train now takes three times as long to pass the goods train, as when they are running in opposite directions, then what is the ratio of the speed of the passenger train to that of the goods train ? (Assume that the trains nm at uniform speeds)

A siren placed at a railway platform is emmitting sound of frequency 5 kHz . A passenger sitting in a moving train A records a frequency of 5.5kHz while the train approaches the siren. During his return journey in a different train B he records a frequency of 6.0 kHz while approaching the same siren. the ratio the velocity of train of A is

A passenger is sitting in a fast moving train The engine of the train below a whistle of frequency 'n' .If the apparent frequency of sound heard by the passenger is 'n' then