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Rating TOP 10
| # | Name | Points |
|---|---|---|
| 1 | profdemath | 7 |
| 2 | mathematik | 3 |
| 3 | alex2311 | 1 |
| 4 | Player | 0 |
| 5 | nicopro | 0 |
| 6 | unamed | 0 |
| 7 | Nikita | 0 |
| 8 | jul | 0 |
| 9 | Rodrick_Grady | 0 |
| 10 | user123 | 0 |
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Recent problems :
(All problems are in the Training section)
- Two trains of length 300m and 250m are moving. Each train has a speed of 85 km per hour and moving in the opposite direction. How long will it take for them to pass each other?
- A plane flies horizontally with a speed V=470 m/s. A man hears the noise of the plane 21 seconds after the passage of the plane above him. From what height flies the plane? Speed of sound: C = 330 m/s.
- An object falls freely of a height h=490 meters. What distance is it going to fall during the last 2 seconds of fall?