Time to Cross Trains: 200m & 150m, 40km/hr & 45km/hr

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SUMMARY

Two trains, one measuring 200 meters and the other 150 meters, are traveling parallel to each other at speeds of 40 km/hr and 45 km/hr, respectively. When moving in the same direction, the time taken for the trains to cross each other can be calculated using relative speed. The relative speed of the trains is 5 km/hr, and the total length to be crossed is 350 meters. Therefore, the time taken for the trains to completely cross each other is approximately 25.2 seconds.

PREREQUISITES
  • Understanding of relative speed concepts
  • Basic knowledge of unit conversion (km/hr to m/s)
  • Familiarity with distance, speed, and time calculations
  • Ability to perform arithmetic operations with decimals
NEXT STEPS
  • Learn how to convert speeds from km/hr to m/s for physics problems
  • Study relative motion in physics to understand train crossing scenarios
  • Explore the concept of time-distance-speed relationships in real-world applications
  • Practice similar problems involving multiple objects moving in parallel
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Students studying physics, educators teaching motion concepts, and anyone interested in solving real-world problems involving relative speed and distance.

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two trains 200 meters and 150 metrers are running on the parallel raila at this rate of 40km/hr and 45 km/hr.in how time will they cross each other if they are running in the same direction?
 
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neha1 said:
two trains 200 meters and 150 metrers are running on the parallel raila at this rate of 40km/hr and 45 km/hr.in how time will they cross each other if they are running in the same direction?
Hi neha1 and welcome to PF,

For future reference, we have https://www.physicsforums.com/forumdisplay.php?f=152" for such questions, but don't worry your thread will get moved there later.

Now for your question. What have you attempted thus far?
 
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