Question

give me the answer of this question as quickly as possible

Answer 1

I have taken v2 as v while v1 as u.

Velocity of mid point = v1

v2-u2=2as or v2=u2+2as -----> (1)

a=v2-u2/2s

Now for the mid-point of the train

s1=s/2

a1=v12-u2/2s1

a1=v12-u2/2s/2

a1=v12-u2/s or v12=u2 + as ----> (2)

from (1) and (2) you will get

as= v2-u2/2

v12=u2 + as

v12= v2+u2 /2


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