前1秒：g*(t - 1)/v = Tan[37]
落地：g*t/v = 1
高度：h = 1/2*g*t^2
将g=9.8代入得：t = 4.05768,v = 39.7653,h = 80.6776请问一下。g*t/v = 1是什么意思。。本人比较笨。g*t/v =Tan[45]=1