来个数学高手解决这英文题目~!~!~~~
Aplaneisflyingduenorthat400km/h.Awindfromduewestisblowingat40km/h,whichblowstheplaneslightlyoffcoures.whatistheplane'snewdirection(angle)andnewvelocity?
顺便问下,verticalvelocity是什么意思?