A train is moving slowly on a straight track with a constant speed of \( 2 \mathrm{~ms}^{-1} \). A passenger in that train starts walking at a
\( \mathrm{P} \) steady speed of \( 2 \mathrm{~ms}^{-1} \) to the back of the train in the opposite
W direction of the motion of the train. So to an observer standing on the platform directly in front of that passenger, the velocity of the passenger appears to be
[KCET 2010]
(a) \( 4 \mathrm{~ms}^{-1} \)
(b) \( 2 \mathrm{~ms}^{-1} \)
(c) \( 2 \mathrm{~ms}^{-1} \) in the opposite direction of the train
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