2. An express train and a local train set off from Party A and Party B at the same time and headed for each other, meeting for 5 hours. After the encounter, the express train continued to drive for 3 hours to reach B, and the slow train was known to be 48 kilometers per hour. How many kilometers is it between Party A and Party B?
3. Party A travels 7 kilometers per hour and Party B travels 5.5 kilometers per hour. Two people leave from Party A to Party B at the same time. 10.5km later, Party A forgot to bring things, went back to the original place, took things and walked on to Party B, and later arrived at Party B at the same time with Party B, finding the distance between Party A and Party B. ..
4.A car travels 60 kilometers per hour, and B car travels 50 kilometers per hour. 2.5 hours after the B car leaves the A station, the A car also departs from this station to catch up with the B car. How many hours can it catch up with the B car?
5. A train has a total length of 3 15m and travels 30m per second. How many seconds does it take to cross a bridge with a length of 1035m?
6. At a distance of 5 kilometers from our coastal defense post, an enemy ship is escaping at a speed of 400 meters per minute. My speedboat immediately set off from the post and opened fire at a distance of 500 meters from the enemy ship nine minutes later, sinking the enemy ship in one fell swoop. Ask me how much faster the speedboat is than the enemy ship?
7. On the double-track railway, the two trains A and B travel in the same direction. The length of train A is 300 meters, the length of train B is 240 meters, the length of train A is 45 meters per second, and the length of train B is 30 meters per second. How many seconds does it take for train A to overtake train B?
8. The distance between the two docks is 600 kilometers. A motorboat sailed from Pier A to Pier B for 25 hours. As we all know, motorboats travel 20 kilometers per hour in still water. How many hours does it take for this motorboat to return from Pier B to Pier A?
9. Bus A and Bus B start from the east and west respectively, with a distance of 2 19 km. Car A starts at a speed of 36 kilometers per hour for 65,438+0.5 hours, and then car B starts at a speed of 30 kilometers per hour. How many hours does it take for car A and car B to meet?
10. An airplane plans to fly at a speed of 8 kilometers per minute. In order to gain time, the speed is increased to 12 km per minute. The result arrived 40 minutes earlier than originally planned. How many kilometers is the distance between the airport and the airdrop site?
1 1. The local train goes from A to B. 1 hour later, it is 40 kilometers away from A. At this time, the express train goes from B to A. Two hours and 30 minutes later, the two cars meet. It is known that the distance between A and B is 265km, and the express delivery speed is requested.
12. The distance between Party A and Party B is 23 1km. A motorcycle and a bicycle walk in opposite directions from both parties at the same time and meet for 3 hours. As we all know, the speed of a motorcycle is 2.5 times that of a bicycle. How many kilometers do motorcycles and bicycles travel per hour?
13. A truck drove from A to B at 8: 00 a.m. with a speed of 36 kilometers per hour. 10: 24, another car drove from a to b at a speed of 60 kilometers per hour. A few hours later, the car overtook the truck. How many kilometers is it from B?
14. A PLA unit conducts military training. Captain 525 meters, traveling at a speed of 1 meter per second. A correspondent needs to go from one end to the other and return to the other immediately because of something. If his speed is 2.5 meters per second, how long will it take him to walk from the end of the line to the end and back?
15. A train is 280 meters long and travels 25 meters per second. How many seconds does it take for the whole train to cross a 920-meter bridge?
16. It takes 52 seconds for a bus to cross an 840-meter-long bridge and 44 seconds to cross a 640-meter-long tunnel at the same speed. What is the speed and body length of this bus?
17. Li Gang is driving a boat in the river. The speed of rowing downstream is per hour 10 km, and the speed of rowing upstream is 6 km per hour. What is the rowing speed of this boat? What is the speed of the current?
18. The speed of the steamboat in still water is 32 kilometers per hour. The steamboat started from the city and went upstream. It takes 8 hours to reach B city, and the distance is 224 kilometers. How many hours does it take for the steamboat to sail from B to A?
Answer:
1.4 (hours)
2.640 km
3. 1 1 (hours), (kilometers) (distance between the two places)
4. 12.5 (hours)
5.45 seconds
6.500 meters
7.36 (seconds)
8.37.5 (hours)
9.2.5 (hours)
10.960 km
1 1.50 km.
12. The speed of bicycles is 22km/h and that of motorcycles is 55km/h..
13.3.6 hours later, the car can catch up with the truck, with a distance of 324 kilometers from B.
14.8 minutes and 20 seconds.
15.48 seconds.
16. This bus can travel 25 meters per second and its body is 460 meters long.
17. The rowing speed of the ship is 8 kilometers per hour, and the speed of the water flow is 2 kilometers per hour.
18. A few hours.