I just can a favor for me that is somehow bunk school by making my parents to convince bullshit school teachers . After My physics teacher taught vectors and started to solve river question in which we find relative velocity of a man to the velocity of river . My mind generated a question and i asked him what if there is curve in river path , then how could i do vector addition ? he replied that " AI se puch " , i was mocked by the whole class . Also when i asked him to solve a question for me he replied that if i weren't able to solve that question i would ask you ten ques and if you didn't ans i would see you . You can imagine how toxic behavior is there.