Two trains, each 180 m long,
Two trains, each 180 m long, are moving towards each other on parallel tracks at speeds of 50 km/hr and 70 km/hr. In how many seconds will they completely cross each other?
दो रेलगाड़ियाँ, जिनमें से प्रत्येक 180 m लंबी है, समानांतर पटियों पर 50 km/hr और 70 km/hr की चाल से एक दूसरे की ओर बढ़ रही हैं। कितने सेकंड में वे एक दूसरे को पूरी तरह से पार की जाएँगी?
Detailed Solution & Logic
Correct Answer:
10.8
Total length = 180 + 180 = 360,m
Relative speed = 50 + 70 = 120,km/h
= $\frac{120 \times 1000}{3600} = \frac{100}{3},$ m/s
Time = $ \frac{360}{100/3} $
= $ \frac{1080}{100} $= 10.8,s
Answer: 10.8 s
Similar Practice Questions
The speed of a boat is still water is 13 km/h
The speed of a boat is still water is 13 km/h and the speed of...
The time taken for a train to pass a pole is 18 seconds, while it taken 33 seconds to cross a bridge measuring 300 meters. Calculate the length of the train.
The time taken for a train to pass a pole is 18 seconds, while it...
The speed of a stream is 9 km/h.
The speed of a stream is 9 km/h. A boat can go 56 km downstream...
Rachin travels a distance at 60 km/hr for 2 hours
Rachin travels a distance at 60 km/hr for 2 hours and 80 km at 40...
A train travels the first 200 km of a journey at a speed of 100 km/h and the remaining 150 km at a speed of 75 km/h. What is the average speed (in km/h) of the train for the entire journey?
A train travels the first 200 km of a journey at a speed of 100...
A car travels from A to B at 80 km/ h and returns at 60 km/h. Find the approx. average speed of the car.
A car travels from A to B at 80 km/ h and returns at 60...
The average speed of a car running at 70 km/hr for 1 hour and ‘P’ km/hr for $1\frac{1}{2}$ hour is 55km/hr. Find the value of p
The average speed of a car running at 70 km/hr for 1 hour and ‘P’...