It turned out that Mr. Xu fell in love at first sight

Chapter 5 Han Rou: Teacher Xu, I'm not in the right mind

Han Rou was clasping her little hands in confusion, when another message popped up from Xu Jingyu.

Xu Jingyu: "The Xiaolongbao near my house is delicious, shall I bring you Xiaolongbao and soy milk?"

Han Rou first ran to the bathroom to wash her face in cold water before coming back, holding the mobile phone with her wet little hands and typing: "Mr. Xu, I sent the wrong message just now..."

Han Rou watched the words "the other party is typing" appearing and disappearing back and forth on the dialog box, digging her fingernails in embarrassment, and sending the message to the wrong person, really...

Xu Jingyu: "It's okay, I'll bring you breakfast tomorrow, that's all."

Xu Jingyu: "Can I call you Han Rou? Miss Han is too unfamiliar."

Han Rou: "It's ok... Teacher Xu, I'm not very good at thinking, don't mind..."

Xu Jingyu: "No, do you know about completely inelastic collisions?"

Hanrou: "I'm not sure..."

Xu Jingyu: "This is how I feel about you, Han Rou is very cute."

Xu Jingyu: "Good night, go to bed early."

Perfectly inelastic collisions?
Han Rou silently recited this abstract noun three times, but still couldn't understand the meaning of these seven words literally, she couldn't fall asleep after tossing and turning, and copied these few words from Xu Jingyu to the browser.

Incompletely elastic collision: momentum is conserved, but mechanical energy is not conserved.

……

Han Rou blinked her eyes, isn't it like there is no explanation...

What is not conserved.

When she was in high school, she was most afraid of physics class every day. Her physics teacher was a 40-year-old moustache teacher who could not speak Mandarin and spoke a dialect.

I was scolded and cried by the mustache teacher several times...

When Han Rou thought of the teacher's appearance, she felt a little trembling in her heart.

She knows this principle, it's inertia... that's what Mr. Mustache scolded her...

Lying on the bed, the moonlight outside shone in, and the translucent whiteness could not conceal the girl's thoughts.

She rolled over and over, non-perfectly elastic collisions...

"What's wrong? Are you hungry?"

Han Wen's voice was lazy and vague, obviously just woke up from sleep, Han Rou heard him yawn five times in succession.

Han Rou hugged the soft pillow and leaned against the head of the bed, biting her fingers tangled.

The moonlight shone down, making the girl look extraordinarily innocent.

"Han Wen, I have something to ask you."

The other party was silent for a long time before Han Rou heard Han Wen's gentle voice, his soft voice could slowly comfort Han Rou's little uneasiness.

"What's the matter, it's so late."

"Wen and Han, do you know what a non-perfectly elastic collision is?"

"What?" Han Rou closed her eyes, holding the phone by her ear with one hand, and covering her eyes with the other hand.

He was half asleep and half awake, thinking that he had heard wrong.

"What is meant by a non-perfectly elastic collision."

“m1v1+m2v2=(m1+m2)V……”寒温下意识的背出了公式，然后又反应过来，掏了掏耳朵疑惑的问道：“丫头，你什么时候又对物理学感兴趣了？”

"Han Wen, can you tell me in a way I can understand!"

Han Wen rubbed his ears that were attacked by the high-pitched sound. When he helped Han Rou with physics tuition, he always used language that Han Rou could digest.

Han Wen thought for a while before telling her in a warm voice: "For example, two small balls collided from two directions. Because of some physical factors, they will not be bounced away."

Han Rou seems to understand but not understand.

"Girl, you asked this so suddenly, and it's still in the middle of the night... Didi..."

Han Wen only felt a headache, put down the phone and fell asleep directly.

　Han Wen, your little cabbage is going to be kicked away by the physics teacher! ! !
　　Han Wen: I actually still push...

　　
　
(End of this chapter)