Correct Answer - Option 4 : D
Given:
A train covers a distance of 435 km
Time taken by train is 2 hours 30 minutes.
Concept used:
To convert the speed from km/hr into m/s
m/s = (5/18) × km/hr
Formula used:
Speed = Distance/Time
Calculations:
We can write 2 hours 30 minutes as 2.5 hours
According to the question, we have
Speed = Distance/Time
⇒ Speed = 435/2.5
⇒ Speed = 174 km/hr
To convert into m/s, multiply it by 5/18
⇒ Speed = 174 × (5/18)
⇒ Speed = 48.33 m/s
∴ The speed of train is 48.33 m/s.