Question

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Answer 1

$\bold {\huge {Your ~answer :-}}$

$\bf\huge\boxed{850 \:m}$

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EXPLAINATION ➣

Train A-

→speed = 72 km / h = 20 m /s 

→time    = 50 seconds 

→Distance = speed X time 

               = 20 X 50 

               = 1000 m 

━━━━━━━━━━

Train B-

→speed = 72 km/h = 20 m/ s

→time    = 50 seconds 

→acceleration = 1 m/s²

→s = ut + 1/2 at²

⇒s = 20 x 50 + 1/2 X 1 X 50 X 50 

   = 1000 + 1250 

   = 2250 m 

Therefore,

⇨ Distance travelled more by train B = 2250 - 1000 = 1250 m 

⇨ distance between two trains  = 1250 - 400

⇨ because in this case we cant take train as a point object

so ,distance between two trains = 850  m

                            

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ᴛʜᴀɴᴋs, ʜᴏᴘᴇ ᴜ ʟɪᴋᴇ ɪᴛ

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|ʙᴇ ʙʀᴀɪɴʟʏ|

Answer 2

Answer:

your handwritting is very nice brother ....

850 m ur answer