So that we do not contaminate it with microorganisms or garbage or other human stuff.
Answer:
4.08 s
Explanation:
Let the passenger took "t" time to catch the train
so in this case the total distance moved by the train + 5 m = total distance moved by the passenger
so we will have
distance moved by train is given as
also the distance moved by passenger
so we will have
t = 4.08 s
force=mass × acceleration
mass=force ÷ acceleration
acceleration=force ÷ mass