Question

A train is moving northward with vealocity 90 kmpar hr .the driver of train A observed train B moving with 72kmpar hourtoward west .The velocity of the train B w.r.t to the singal man on the origin

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Answer 1

Answer:

Train 1 velocity =v

Train 2 velocity =u

Let distance between trains be x

Relative velocity of t

2

with repect to t

1

will be,

u

t

2

t

1

=v

t

2

−v

t

1

=u−v

According to Newtons 3rd law of motion

v

2

−u

2

=2as

a=

2s

v

2

−u

2

since final velocity is 0 then,

s=

2x

0−(u−v)

2

a=

2x

(v−u)

2

Explanation:

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