かく運動 うんどう りょう保存 ほぞん法則 ほうそくじゃなかったです
kaku undōryōhozonno hōsokujanakattadesu

Noun
Desu Copula

The polite, past negative form of 角運動量保存の法則

1. Wasn't the law of conservation of angular momentum.

Past/Perfective
Negative
Polite
Casual Register
Physics