A train travelling at a speed of 45 km/h crosses a house in 12 seconds. What is the length of train.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 150 m
Speed = 45 km/h = 45 × 5/18 = 25/2 m/s
Speed of the train = length of the train/time
25/2 = L/12
L = 150m