A plane makes a uniform linear motion and flies 1000 meters in 5 seconds. How many meters per second is its speed? How many kilometers per hour?

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• 1. An airplane flies about 1000 meters, 90 kilometers and 900 kilometers per hour
• 2. How many days does it take for a plane to circle the earth's equator at the speed of 800 kilometers per hour?
• 3. A. B: the distance between the two places is 15 kilometers. One car is 50 kilometers per hour and the other is 40 kilometers A. B is 15 kilometers apart. One car starts from a at 50 kilometers per hour and the other at 40 kilometers per hour. At the same time, they start in the same direction. After a few hours, the two cars are 30 kilometers apart
• 4. Wang Hua and Zhang Ming are good friends. He goes to school with him every day. What's wrong with this sentence
• 5. Party A and Party B start from the same place in the opposite direction at the same time. Party A rides a bicycle and travels 12 kilometers per hour. Party B rides a motorcycle and travels 40 kilometers per hour. How many kilometers are there after three quarters of an hour
• 6. The total age of Zhang Ming and Wang Hua this year is 27. When Wang Hua was as old as Xiao Ming, their age ratio was 3:4. How old is Wang Hua this year?
• 7. A correspondent rides a motorcycle to deliver the documents within the prescribed time. His speed is 36 kilometers per hour. As a result, he arrives 20 minutes earlier. If he is 30 kilometers per hour, he is 12 minutes late? What's the distance?
• 8. How to refit motorcycle engine fast? How to increase the power of the engine, for example: 110 type
• 9. 1. If the lengths of the three sides of △ ABC are root 5, root 10 and root 15, then the lengths of the two sides of △ ABC are 1 and root 2. If the length of the third side of △ a1b1c1 is_____ The results show that △ ABC is similar to △ a1b1c1 2. The lengths of the three sides of a known triangle are 1, root 2 and root 3. Please write down the lengths of the other three line segments so that the triangle formed by the three line segments is similar to the known triangle___ 、___ 、___ .
• 10. (1) The distance between a and B is 264 km. A takes a bus from a to B, with an average of 80 km per hour. B takes a motorcycle from B to a, with an average of 32 km per hour. When a meets B after 200 km, how many hours ahead of B? (2) A supermarket bought 100 pens at the price of 5 yuan per pen. When they were sold, they were priced at 8 yuan per pen. When some of them were sold, the remaining pens were sold at a 10% discount. When all the pens were sold, a total profit of 288 yuan was made. How many pens were sold at a 10% discount? I knelt down and begged
• 11. A bicycle travels 16 kilometers in 2 hours and an airplane 1200 meters in 2 seconds. What is the speed ratio between a bicycle and an airplane?
• 12. A plane flies 72 kilometers in 5 minutes. What's its speed? Km / h? And M / S?
• 13. Calculation problem: a plane with uniform linear motion has flown 360 km in 20 minutes. What's its flight speed, km / h? How many M / S
• 14. It takes 5 hours and 30 minutes for a plane to travel between the two cities in the downwind and 6 hours in the upwind. The known wind speed is 24 kilometers per hour, so the distance between the two cities can be calculated
• 15. When the aircraft flies, the flight direction is expressed by the angle between the flight route and the actual South or north direction line. As shown in the figure, the clockwise angle between an (north-south line) and the flight line is used as the flight direction angle. The flight direction angle from a to B is 35 °, the flight direction angle from a to C is 60 ° and the flight direction angle from a to D is 145 °. The angle between AB and AC is multiple Less? What is the angle between AD and AC? And draw the flight line from a with 105 ° angle
• 16. When the wind speed is 22km / h, it takes 2 hours and 30 minutes to fly with the wind and 3 hours to fly against the wind. The distance between the two cities is calculated
• 17. A plane flies between two cities with a wind speed of 24km / h. It takes 2h50min to fly along the wind and 3H to fly against the wind When an aircraft flies between two cities, the wind speed is 24km / h, it takes 2h50min to fly along the wind, and 3H to fly against the wind. The flight speed and the distance between two cities are calculated
• 18. When a plane flies between two cities, it takes 2 hours and 45 minutes to go downwind and 3 hours to go upwind. Given that the wind speed is 20 km / h, what is the distance between the two cities?
• 19. When an aircraft flies between two cities, 11 / 4H downwind and 3H upwind, and the known wind speed is 20km / h, what is the distance between the two cities?
• 20. The plane flies between a and B cities. The downwind speed is a kilometer per hour, the upwind speed is B kilometer per hour. The wind speed is x kilometer emergency