Question: Two goods train each 350 m long are running in opposite directions on parallel tracks. Their speeds are 42 km/h and 30 km/h, respectively. Find the time taken by the slower train to pass the driver of the faster train
Options:
A) 38 s
B) 32 s
C) 39 s
D) 35 s
Show Answer
Answer:
Correct Answer: D
Solution:
- Relative speeds $ =(42+30),km/h $
$ =74km/h=( 72\times \frac{5}{18} )=20m/s $
$ \therefore $ Time taken to cross each other $ =\frac{350+350}{20}=35s $