垂直 すいちょく抗力 こうりょくじゃなかったです
suichokukōryokujanakattadesu

Noun
Desu Copula

The polite, past negative form of 垂直抗力

1. Wasn't vertical force.; Wasn't a vertical reaction.

Past/Perfective
Negative
Polite
Casual Register
Physics