Physics
Asked by Thirunavukkarasu Arthanari · 5 years ago
A passenger is travelling in a train
moving at 72 kmh-1. His suitcase
is kept on the berth. The driver of
the train applies brakes such that
the speed of the train decreases at
a constant rate of 36 kmh-1 in 5 s.
What should be the minimum
coefficient of friction between the
suitcase and the berth if the
suitcase is not the slide during
retardation of the train?
a) 10/49 b) 10/98
c) 28/49 d) 30/98 give explanation