Question

rHow long will at train 450 m long travelling 45 km​

Answer 1

Answer:

sorry

you said I cannot understand

Answer 2

Answer:

This is a question on distance, speed and time where the first two variables are given and the third variable unknown. Continuing,

Distance = 40 m and speed = 45 km/h = 45,000 m / 3600 s = 12.5 m/s

Time = distance / speed

Time = 450 m / 12.5 m/s

Time = 36 seconds