if a 250m long train crosses a platform of the same length as that of the train in25seconds,then the speed of the train is

• total length covered in 25 sec=250+250=500m
  thus speed=500/25=20m/s
  
• 11 years agoHelpfull: Yes(10) No(0)
• total distance covered by train to cross platfrm [d] =250(length of train)+250 (length of platfrm)
  therefore d=500 m
  time taken to cover distance [t] = 25 sec
  speed = d/t=500/25= 20 .....ans
• 11 years agoHelpfull: Yes(4) No(0)
• total distance travelled=250*2=500m
  time=25sec.
  speed=500/25=20m/s
• 11 years agoHelpfull: Yes(3) No(0)
• time =(length of train + length of platform)/speed of train
  ans = 20m/s
• 11 years agoHelpfull: Yes(3) No(0)
• Speed=total distance / time
  [250+250]/20
  Gives 20 m/s.......
• 11 years agoHelpfull: Yes(2) No(0)
• 72 km/hr...:)
• 11 years agoHelpfull: Yes(1) No(3)