Two trains travel towards each other on parallel tracks.
At what speed does a passenger in train B see train A approaching?
10 m/s10\text{ m/s}10 m/s
20 m/s20\text{ m/s}20 m/s
30 m/s30\text{ m/s}30 m/s
50 m/s50\text{ m/s}50 m/s
Two trains travel towards each other on parallel tracks.
At what speed does a passenger in train B see train A approaching?
10 m/s10\text{ m/s}10 m/s
20 m/s20\text{ m/s}20 m/s
30 m/s30\text{ m/s}30 m/s
50 m/s50\text{ m/s}50 m/s