Q. A train 150 m long is running with a speed of 68 kmph. In what time will it pass a man who is running at 8 kmph in the same direction in which the train is going?

• relative speed=68-8=60kmph,
  60kmph=50/3mps,
  time taken=150*3/50=9sec
• 11 years agoHelpfull: Yes(1) No(0)
• 68*(5/18) = 170/9 m/s;
  8*(5/18) = 20/9 m/s;
  speed of train-speed of man= net speed=150/9 m/s;
  time=distance/speed;
  time=150/(150/9);
  time=9 seconds;
• 11 years agoHelpfull: Yes(0) No(0)
• (68-8)*5/18*x=150
  or x=9sec (ans)
  
• 11 years agoHelpfull: Yes(0) No(0)
• 
  Speed of the train relative to man =( 68 - 8 )
  = 60 Kmph
  = 60 x 5 / 18
  =50/3 m/sec.
  Time taken by it to cover 150 m at (50 /3)m/sec= (112 - 50)kmph
  = (150 x 3/50)sec
  = 9 sec.
  
• 11 years agoHelpfull: Yes(0) No(0)