Question

17. The speed of a train is 30 km How long will it take to cross a stal se
is 25 m
( How long will a 50-m-long train travelling at 72 kmh take to cross a pole?
​

Answer 1

Answer:

sorry I don't know this answer, opps

Answer 2

Step-by-step explanation:

speed of a train is 30 km/h

distance travelled = length of the train

distance = 25 m , speed = 30 ×(18/5) =108 m/s

time. = distance / speed

= 25/108 sec = 0.23 second

let's try second part

distance = 50 m , speed = 72 km/h => 72 ×(18/5)m/ s

time = 50/[72 ×(18/5)] = 0.96 second