A passenger train of length $$60$$ m travels at a speed of $$80$$ $$km/hr$$ . Another freight train of length $$120$$ m travels at a speed of $$30$$ $$km/hr$$. The ratio of times taken by the passenger train to completely cross the freight train $$wheni)$$ They are moving in the same $$directionii)$$ In the opposite direction is

Question

A passenger train of length $$60$$ m travels at a speed of $$80$$ $$km/hr$$ . Another freight train of length $$120$$ m travels at a speed of $$30$$ $$km/hr$$. The ratio of times taken by the passenger train to completely cross the freight train $$wheni)$$ They are moving in the same $$directionii)$$ In the opposite direction is

Infinity Learn · Accepted Answer

→$$60$$ $$m80$$ $$km/hr$$ →$$120$$ $$m30$$ $$km/hrRelative$$ speed of passenger $$train=$$  $$v1$$ $$-$$ $$v2$$ $$=50$$ $$km/hr$$ $$T1=$$      total length of train $$=relative$$ $$spped18050$$ Trains are moving in opposite directionRelative speed of $$train=$$ $$v1$$ $$+$$ $$v2$$  $$=110$$ $$km/hr$$   $$T2=total$$ length of $$train=relative$$ $$speed180110$$ $$T1T2=11050=115$$

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A passenger train of length 60 m travels at a speed of 80 km/hr . Another freight train of length 120 m travels at a speed of 30 km/hr. The ratio of times taken by the passenger train to completely cross the freight train wheni) They are moving in the same directionii) In the opposite direction is

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