Traditional Culture Encyclopedia - Traditional customs - Dragon boat racing at the Dragon Boat Festival is a traditional folk custom in China. In the dragon boat racing activities, the following statements are correct ( ) A. The bottom of the dragon boat ma
Dragon boat racing at the Dragon Boat Festival is a traditional folk custom in China. In the dragon boat racing activities, the following statements are correct ( ) A. The bottom of the dragon boat ma
| A. The bottom of the dragon boat is made into a streamlined, in order to reduce the resistance of the water, so the option is incorrect; B. When the dragon boat floats on the surface of the water, the buoyancy of the dragon boat is equal to the force of gravity, so the option is incorrect; C. The paddle rowed backward, giving the water a backward force, but also by the water forward reaction force, the dragon boat advances, indicating that the role of forces between objects is mutual. C, the paddle backward, giving the water a backward force, but also by the water forward reaction force, the dragon boat forward, the role of the force between the objects is mutual, so the option is correct; D, stop paddling, because of inertia, the dragon boat will continue to move forward for a certain distance, and is not by the water's role in the thrust, so the option is not correct. The C. |
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