Physics, asked by akshajmahajan07, 1 month ago

A 350 m long train passes over a 250 m long bridge at a speed of 54 km/h. How long will it take to cross the bridge?
1) 1/90 hr
2) 2/3 hr
3)2/3sec
4) 40 minutes ​

Answers

Answered by davevanshcrhs2021
1

Answer:

u r wrong

Explanation:

Train's length=350m=0.35km. Bridge's length=250m=0.25km. Total distance to be covered by the train=0 35+0.25km=0.6km. Time it will take to do so=distance/speed=0.6/54=0.01 hr.

Answered by rizu8444
0

Answer:

the correct answer is 1/90 hr option no. A

Explanation:

speed = distance / time

54×1000/60×60

⇒15=600t⇒t=60015⇒t=40sec⇒t=4060×60hr⇒t=190hr

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