在电视节目中,我们常常可以看到一种精彩的水上运动——滑水。看到滑水运动员在水面上乘风破浪快速滑行时,你也许会想,滑水运动员站在滑板上为什么不会沉下去呢? 秘密就在这块小小的滑板上。滑水运动员滑水时,身体总是向后倾斜,双脚向前用力蹬滑板,使滑板和水面有一个夹角。当前面的快艇通过水平绳牵引着运动员时,运动员通过滑板对水面施加一个斜 In television programs, we can often see a wonderful water sports - water skiing. When you see the waterskier riding the wind and breaking the waves quickly on the water, you may wonder why the waterskiers cannot sink on the skateboard. The secret is on this little skateboard. When the water skier is waterskiing, the body always tilts backwards, and his feet are forced forward to slide the skateboard so that the skateboard has an angle with the water surface. When the front speed boat pulls the athlete through the horizontal rope, the athlete applies a diagonal to the water surface through the skateboard.