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Explanation
According to the question “A goods train runs at the speed of 72 km/h and crosses a 250m long platform in 26 seconds”.
Suppose the length of the train = y
Total length = y + 250
Speed is given but needed to be converted to m/sec and time is also given (26 sec).
Length of the train will be find out easily by substituting the values in the formula mentioned below;
y + 250 = speed x time
To Find
Length of the goods train = ?
Solution
Given speed = 72 km/h
Speed in m/sec = (72 x 1000)/3600
Speed in m/sec = 20 m/sec
Let suppose
length of the train = y
so, total length = y + 250
Now,
length = speed x time
y + 250 = 20 x 26
y = 520 – 250
y = 270 meter answer
Conclusion
If a goods train runs at the speed of 72 km/h and cross a 250m long platform in 26 seconds then the length of the goods train will be 270 meter.
