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The two trains come from opposite places of Party A and Party B. passenger cars travel 60 kilometers per hour and freight cars travel 55 kilometers per hour. When two cars meet, passenger cars travel more than freight cars 20 kilometers. What is the distance between Party A and Party B?
Encounter time = 20 ÷ (60-55) = 4 hours
Distance = 4 × (60 + 55) = 460 km
The two trains are coming head-on from a and B. the passenger train is 60 km / h and the freight train is 55 km / h. The two trains meet The two trains are coming head-on from a and B. the passenger train is 60 km / h and the freight train is 55 km / h. When the two trains meet, the passenger train is 30 km longer than the freight train. How many kilometers are there between a and B?
You can do it without equations
According to the meaning of the topic, the passenger car travels 60-55 = 5km more than the truck per hour
At the time of meeting, the bus travels 30 kilometers more than the truck, so it takes 30 ÷ 5 = 6 hours for the two cars to meet,
Therefore, the distance between a and B is 6 × (60 + 55) = 690 km
A 120 meter long truck met an oncoming 160 meter long bus. It took 8 seconds from the front to the rear. The truck drove 17 meters per second, with no passengers How many meters does the car travel per second?
18 meters
It takes 80 seconds for a train to pass the 200 meter bridge and 72 seconds to pass the 114 meter long bridge No equations, just equations
Train speed: (200-114) ÷ (80-72) = 10.75 M / S
Conductor: 80 × 10.75-200 = 660m
A train passes through a 900 meter long railway bridge. It takes 1 minute and 25 seconds from the front of the train to the rear of the train. Then the train passes through a 1800 meter long tunnel. It takes 2 minutes and 40 seconds from the front of the train into the tunnel to the rear of the train to leave the tunnel. Calculate the speed of the train and the length of the body
1 minute 25 seconds = 85 seconds, 2 minutes 40 seconds = 160 seconds,
The train speed is: (1800-900) ÷ (160-85),
=900÷75，
=12 (M / s);
Body length: 85 × 12-900，
=1020-900，
=120 (m);
A: the speed of the train is 12 m / s and the length of the body is 120 M
A train passes through a 900 meter long railway bridge. It takes 1 minute and 25 seconds from the front of the train to the rear of the train. Then the train passes through a 1800 meter long tunnel. It takes 2 minutes and 40 seconds from the front of the train into the tunnel to the rear of the train to leave the tunnel. Calculate the speed of the train and the length of the body
1 minute 25 seconds = 85 seconds, 2 minutes 40 seconds = 160 seconds,
The train speed is: (1800-900) ÷ (160-85),
=900÷75，
=12 (M / s);
Body length: 85 × 12-900，
=1020-900，
=120 (m);
A: the speed of the train is 12 m / s and the length of the body is 120 M
RELATED INFORMATIONS
- 1. A train passes through a 900 meter long railway bridge. It takes 1 minute and 25 seconds from the front of the train to the rear of the train. Then the train passes through a 1800 meter long tunnel. It takes 2 minutes and 40 seconds from the front of the train into the tunnel to the rear of the train to leave the tunnel. Calculate the speed of the train and the length of the body
- 2. How long does it take for a 120cm long train to pass through a 300m long tunnel at the speed of 54
- 3. It takes 23 seconds for a train to pass through a 450 meter long bridge and 8 seconds for a worker standing by the railway. What is the speed and length of the train
- 4. A train is 200 meters long and passes through a 1800 meter long railway bridge at a speed of 20 meters per second. How long does it take for the train to pass through the bridge? The important thing is the format Both objects of a and B move in a straight line at a uniform speed. The distance a passes through is twice that of B, and the time B moves is 1.5 times that of A. what is the speed ratio of a and B?
- 5. A bus runs 50 kilometers per hour and a truck runs 55 kilometers per hour. The two cars leave from the two places at the same time. When they meet, the truck travels 7.5 kilometers more than the bus. How many kilometers are the two places apart?
- 6. The railway from Nanjing to Changzhou is 138 kilometers long. An express train and a slow train leave from Nanjing and Changzhou at the same time. It is known that the fast train runs 88 kilometers per hour and the two trains meet in one hour. After meeting, how many hours will the slow train travel to Nanjing?
- 7. The passenger car and the freight car run in the same direction. The passenger car is 150 meters long and the freight car is 250 meters long. If the passenger car speed is twice the freight car speed and less than 20 kilometers, and their passing time is 45 seconds, what are the speeds of the two cars respectively?
- 8. The speed of a passenger car is 60 km / h and the speed of a freight car is 45 km / h. The freight car is 135 meters longer than the passenger car. If the two cars run opposite on the parallel track and the time they spend in the process of meeting is 30 seconds, the lengths of the passenger car and the freight car are ___
- 9. The railway from Shanghai to Tianjin is 1325 kilometers long. A train from Shanghai to Tianjin has been running for 5 hours, just 2 / 5 of the whole journey. Drive like this and arrive in Tianjin in a few hours? (in two ways)
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- 12. A passenger and freight car and a freight train run on two parallel tracks respectively, with a passenger car of 150m and a train of 250m Weak 2 trains run towards each other and leave the supply and demand for 10s from the corner of the front to the rear. If the passenger and freight vehicles catch up with the freight train from the rear, it takes 100s from the front to the rear of the freight train to completely exceed the freight train, try to find the speed of 2 trains
- 13. The speed of the freight car is 75% of that of the passenger car. The freight car and the passenger car run towards each other from a and B at the same time, and meet each other after 3 hours. The ratio of the distance between the freight car and the passenger car is __: __
- 14. On a two track railway, two trains cross each other. If the total length of train a is 180m and the total length of train B is 160m, the passing time of two trains is 4 seconds and the speed of train a is 5m faster than that of train B, what are the speeds of train AB
- 15. As shown in the figure, a railway bridge is 400m long. A person walks on the bridge. When he walks 190m away from the bridge head in front, he finds a train coming in the face. The train speed is 40m / s and the train is 800m away from the bridge head in front. How fast can the person run at least to leave the railway bridge safely?
- 16. The car runs 60 kilometers per hour and the train runs 75 kilometers per hour. How many percent faster is the train than the car?
- 17. What is the indefinite integral of 1 + x ^ 2 under the root sign? It is necessary to explain the process or method
- 18. Some students took the power train to travel. When the train accelerated evenly on a straight track, one student proposed, "can we use the equipment around us to measure the acceleration of the train?" many students participated in the measurement. The measurement process was as follows: they looked out of the window every 100m While recording the time with a watch, they observed that the time interval from the first landmark to the second landmark is 5S, and the time interval from the first landmark to the third landmark is 9s. Please find out according to their measurement: (1) Acceleration of train; (2) The speed at which they reached the third sign
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- 20. There is a railway bridge with a length of 1000 meters. A train passes through the bridge. It is measured that it takes 120 seconds for the train to get on the bridge and get off the bridge completely. The time for the whole train to be completely on the bridge is 80 seconds. What are the speed and length of the train respectively?