Mathematics · Kinematics
Train A and train B are running on parallel tracks in opposite directions with speeds of 36 km/h and 72 km/h, respectively. A person is walking inside train A in the direction opposite to its motion with a speed of 1.8 km/h. The speed (in m/s) of this person as observed from train B will be close to:
- 130.5 m/s
- 231.5 m/s
- 328.5 m/s
- 429.5 m/s✓
Correct answer
29.5 m/s
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