小开认为爱因斯坦错了!?

小开是英国五年级小学生,最近他认为爱因斯坦有可能错了。他的理由如下:
Einstein said:
A. Nothing can travel faster than light
B. Everything is relative.
C. There is no way to tell that you’re moving.

Now, if Rocket A is travelling at ¾ of the speed of light straight up from the north pole relative to earth, and Rocket B is travelling at the same speed but from the south pole relative to earth. Then, relative to Rocket A, Rocket B is travelling at 1 ½ of the speed of light. This is impossible because of Statement A. So, both rockets must be moving, however, this is contradictory to Statement C.
By assuming all of Einstein’s Statements are correct, we have reached a paradox, therefore, Einstein is wrong!!!

文科生妈妈无法完全理解他的想法。敬请理科高手解答挑错。

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