A train has length of 150 meters. It is passing a man who is moving at 2 km/hour in the same direction of the train, in 3 seconds. Find out the speed of the train?

Shohan

5 views

2025-01-04 04:42

1 Answers

Shohan

$H e r e, t h e t i m e t a k e n b y t h e t r a i n t o p a s s t h e m a n i s e q u a l t o t h e t i m e t a k e n t o p a s s i t' s l e n g t h 150 m e t e r s .$

$∴ T h e s p e e d o f t h e t r a i n = \frac{D i s \tan c e c o v e r e d b y t h e t r a i n}{t i m e} = \frac{150}{3} m s^{- 1} = \frac{150}{3} \times \frac{18}{5} = 180 k m p h$

$N o w, r e l a t i v e s p e e d = S p e e d o f t r a i n - S p e e d o f m a n$

$= 180 S p e e d o f t r a i n - 2$

$∴ S p e e d o f t r a i n = 180 + 2 = 182 k m p h .$

5 views Answered 2024-12-14 13:31

Related Questions

A man has to go 10 km to catch a bus. He walks part of the way at 7km/per hour and runs rest of the way at 12 km/per hour. If he takes 1 hour 15 minutes to complete his journey, find how far he waked.

1 Answers 12 Views

A man’s running speed is 3 times of his walking speed. He runs a distance and comes back by walking . Total time taken by him is 2 hours. What is the distance in miles if he runs 9 miles per hour? (speed)

1 Answers 5 Views

Rashed is driving at a speed of 120 km per hour Mahi started one hour late and started driving at a speed of 140 km per hour. How long will it take for Mahi to catch up Rashed? (work & time)

1 Answers 12 Views

Two trains running at the rate of 75km and 60km an hour respectively on parallel rails in opposites directions, are observed to pass each other in 8 seconds and when they are running in the same direction at the same rates as before, a person sitting in the faster train observes that he passes the other in 33 seconds. Find the lengths of the trains.

1 Answers 13 Views

A train passes a man in 3 second, and another train from opposite direction pass the man 4 second, both train same length. How long time need to pass the train each other? (Train)

1 Answers 5 Views

A train 400 meter long overtook a man walking along the line in the same direction at a speed of 5 km/hr and passed him in 40 seconds. The train reached the station in 20 minutes after it had passed the man. In what time did the man reach the station?

1 Answers 12 Views

A river is flowing at a speed of 5 km/h in a particular direction. A man, who can swim at a speed of 20 km/h in still water, starts swimming along the direction of flow of the river from point A and reaches another point B which is at a distance of 30 km from the starting point A. On reaching point B, the man turns back and starts swimming against the direction of flow of the river and stops after reaching point A. The total time taken by the man to complete his journey is?

1 Answers 4 Views

The distance between two stations 'X and Y' is 450 km. A train L starts at 6:00 pm from X and moves towards Y at an average speed of 60 km/h. Another train M starts from Y at 5:20 pm and moves towards X at an average speed of 80 km/h. How far from X will the two trains meet and at what time ? (Train)

1 Answers 19 Views

A cow was standing on a bridge, Sm away from the middle of the bridge. A train was coming towards the bridge from the ends nearest to the cow. Seeing this, cow ran towards the train and managed to escape when the train was 2m away from bridge. If it had run in the opposite direction, it would hit by the train 2m before the end of the bridge. What is the length of the bridge in meters assuming the speed of the train is 4 times that of cow? (Train)

1 Answers 11 Views

Jane covered a distance of 340 miles between city A and city B taking a total of 5 hours. If part of the distance was covered at 60 miles per hour speed and the rest at 80 miles per hour speed, how many hours did the travel at 60 miles per hour? (Speed & Distance)

1 Answers 5 Views

এক্সাম দিয়ে মেধা যাচাই করুন

Job Preparation (1125)

Admission (754)

এসএসসি (10)

এইচএসসি (5)