"Master the trajectory?" Lilith was stunned.
The word was actually not so popular, so it took some time for her to recall such a profound word.
"You are referring to the path it took for moving objects, right?"
Lucas was slightly taken aback by the realization that suddenly struck him.
To confirm his speculation, he asked, "Do you know what gravity is?"
"Gravity?" Lilith's eyes widened.
Lucas waited for Lilith to receive a response since she appeared to try to recall if such a word existed.
But he knew there was no hope for Lilith to know it.
If she did, she would not have taken so much time trying to recall the word, for gravity was well-known to everyone.
In his previous world, that is.
'I guess physics doesn't apply in the world of magic.' Lucas amused.
"Okay. There's no need to try hard. I will explain what gravity is and how it affects the motion of a moving object when it is in the air."