Question

A train 335 metre long in length crosses a man standing on a platform in 20 seconds find the speed of train how long will it take to pass a platform of length 201 m?​

Answer 1

Answer:

See the image for the solution

Answer 2

Answer:

The Speed of the train to pass the man standing is 16.75 meters per second

The time taken by train to pass the platform is 12 seconds .

Step-by-step explanation:

Given as :

The Total length of train = L = 335 meters

The time taken by train to cross the man standing on platform = T = 20 seconds

Let The Speed of the train to pass the man standing = S meters per sec

According to question

∵  Speed = $\dfrac{\tetxrm Distance}{\tetxrm Time}$

i.e speed = $\dfrac{\tetxrm Length of train}{Time taken to pass standing man}$

i.e S = $\dfrac{L}{T}$

Or, S = $\dfrac{335}{20}$

i.e S = 16.75 meters per second

So The Speed of the train to pass the man standing = S  = 16.75 meters per second

Hence, The Speed of the train to pass the man standing is 16.75 meters per second

Again

The length of the platform = l = 201 meters

The Speed of the train to pass the platform = s = 16.75 m/s

Let The time taken by train to pass the platform = t seconds

So,

∵ Time = $\dfrac{\tetxrm Distance}{\tetxrm Speed}$

I.e Time = $\dfrac{\tetxrm Length of platform}{\tetxrm Speed of train}$

or, t = $\dfrac{l}{s}$

Or, t = $\dfrac{201}{16.75}$

i.e t = 12 seconds

So, The time taken by train to pass the platform = t = 12 seconds

Hence, The time taken by train to pass the platform is 12 seconds . Answer