Two trains along the same straight rails moving with constant speed 60 km/hr and 30 km /hr respectively towards each other .If at time t=0,the distance between them is 90 km ,what is time when they collide
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Answer:
The relative velocity ν
rel
=60−(30)=90 km/hr
Distance between the train S
rel
=90 km,
∴ Time when try collide =
ν
rel
S
rel
=
90
90
=1 hr
Explanation:
I hope this helps you
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