The frontal cross-sectional area, the velocity of the swimmer, the wetted surface area of the swimmer, the density of the fluid, and the coefficient of drag will all be the same whether the body is on the front or side.
The frontal cross-sectional area, the velocity of the swimmer, the wetted surface area of the swimmer, the density of the fluid, and the coefficient of drag will all be the same whether the body is on the front or side.
身体前部分的横截面面积，运动员的速度，运动员的触水面积，液体的密度以及拖曳系数都是一样的而无论身体是朝向一边或前倾。