Relative Velocity in One Dimension
A train travels east at 30 m/s relative to the ground. A passenger on the train walks west at 2 m/s relative to the train. A car on a parallel road travels east at 20 m/s relative to the ground. What is the velocity of the passenger relative to the car?
A
8 m/s east
B
12 m/s east
C
8 m/s west
D
48 m/s east
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