A train of length 50m is moving a constant speed of 10m/s . calculate ...
To cross an electric pole...
d=50m(length of train...as the whole train has to cross the pole)
s=10m/s
t=d/s=50/10=5seconds
to cross the bridge...
d=50+250=300m(length of train+bridge)
s=10m/s
t=d/s=200/10=20seconds
This question is part of UPSC exam. View all JEE courses
A train of length 50m is moving a constant speed of 10m/s . calculate ...
Problem:
A train of length 50m is moving at a constant speed of 10m/s. Calculate the time taken by the train to cross an electric pole and a bridge of length 250m.
Solution:
To calculate the time taken by the train to cross the electric pole and the bridge, we need to consider the total distance that the train needs to cover.
Step 1: Identify the total distance to be covered
The total distance to be covered is the sum of the length of the train, the length of the electric pole, and the length of the bridge.
Total distance = Length of train + Length of electric pole + Length of bridge
Total distance = 50m + 0m + 250m
Total distance = 300m
Step 2: Calculate the time taken
To calculate the time taken by the train, we can use the formula:
Time = Distance / Speed
Substituting the values, we have:
Time = 300m / 10m/s
Time = 30s
Therefore, the train will take 30 seconds to cross the electric pole and the bridge.
Summary:
- The total distance to be covered is the sum of the length of the train, the length of the electric pole, and the length of the bridge.
- The time taken by the train can be calculated using the formula: Time = Distance / Speed.
- Substituting the values, we find that the train will take 30 seconds to cross the electric pole and the bridge.