Question

A train S, 120 m long runs with a velocity 72 kmh; while train T 130 m long is running in opposite direction with a velocity 108 kmh. The time taken by T to cross train S is.....

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Answer 1

$\huge\bold\pink{Answer}$

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Velocity of S train = 72 km/h = 20 m/s

Velocity of T train = 108 km/h = 30 m/s

Relative velocity of T with respect to S =

=30 + 20

= 50m/s

Distance = train 1 + train 2

= 250 m

Time = Distance / speed

= 250 /50

=5 sec.

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Answer 2

$\huge{\bf{\red{\fbox{\underline {Question}}}}}$

A train S, 120 m long runs with a velocity 72 kmh; while train T 130 m long is running in opposite direction with a velocity 108 kmh. The time taken by T to cross train S is.....

$\huge{\bf{\red{\fbox{\underline{Answer}}}}}$

Velocity of S train = 72 km/h

= 20 m/s

Velocity of T train = 108 km/h

= 30 m/s

Relative velocity of T with respect to S

=30 + 20

= 50m/s

Distance = train 1 + train 2

= 250 m

• Time = Distance / speed

= 250 /50

=5 sec.