Train travelling at a speed of 90 km/hr crosses a man standing on a platform in 8 seconds. Find the time taken by the train to cross the platform of length 250 kms.
Answers
Answer:
please mark me brainalist please
∴ The time taken by the train to cross the platform of length 250 meters is 18 seconds.
Step-by-step explanation:
Speed = 90 km/h
Time = 8 seconds.
Formula used:
Distance = Speed × Time
Calculation:
According to the questions:
Speed = 90 km/h
⇒ 90 × (5/18) m/sec.
⇒ 25 m/sec
Now,
Distance = Speed × Time
⇒ D = 25 × 8
⇒ 200 meter.
When the train to cross the platform of length 250 meter,
Total distance = (200 + 250) meter
⇒ 450 meter.
Time = distance/Speed
⇒ 450/25
⇒18 seconds.
∴ The time taken by the train to cross the platform of length 250 meters is 18 seconds.
Answer:
Length of platform could be 250 m & not 250 k.m.
The man standing on a platform may be considered as a point the train is crossing.
Speed of train =( 90×1000) / (60×60) m/sec = 90000/3600 = 900 / 36= 100/4 = 25m/ sec
Distance train travels in 8 sec = 25 × 8 = 200 m
Length of train = 200 m
Length of platform = 250 m
Total distance for train to fully cross = length of train + length of platform = 200 + 250 = 450 m
Time taken to cross platform fully = distance/speed = 450 / 25 = 18 sec
hope this helps uhh..
Mark me Brainlist..