题目

老师说题里的信息如果不全可以自己假设一个,比如速度不知道就可以假设这个人的速度是50.
Anakin and Sebulba are pod-racing on the plante Tatooine.The race includes a sharp (90 degrees) left turn around a cliff that Anakin is approaching and Sebulla has already completed.Sebulba's speed is 500mph.Anakin's radar tells him that the distance between him and Sebulba is decreasing at a reat of 120mph.How fast is Anakin going when he is 8 miles due north of the intersection point ans Sebulba is 6 miles due east of it?

提问时间：2021-03-01

答案

Choose the coordinates this way: the intersection as the origin, east is +x, north +yWhen Anakin (A) is 8 miles north of the intersection, let the time be 0 hour, and his speed is v mphAt the moment o...