牛郎跟织女 最快多少年会见面一次?
Please find the answer carefully , part of points will be given depending
on your calculation process. (30 points)
(If what we know is just the distance of each person from earth)
(And assume that the highest speed in university is 光年/year)
Cause' 牛郎星距离地球16光年
and 织女's 27光年
地球分别指到两者形成长度分别为16及27的方向向量
当两个方向相同的condition下 相减取绝对值会有最小值
也就是 27-16 = 11 光年
If 牛郎 and 织女 take the speed of one 光年 per year , and travel
with opposite direction right foward each other , then we can
assume that , they will meet each other in 5.5 光年. <