[填空题]
You are driving south on a highwayg vrfypv1m:x)( (jxq3 at 25 m mc5v:ue/ydp 9 sg,)hy6 ;lfg$\mathrm{~m} / \mathrm{s} $ (approximately 55$ \mathrm{mi} / \mathrm{h} ) $in a snowstorm. When you last stopped, you noticed that the snow was coming down vertically, but it is passing the windows of the moving car at an angle of $30^{\circ} $ to the horizontal. Estimate the speed of the snowflakes relative to the car and relative to the ground.
