City: Me, IQ 300

Chapter 44 is this also called difficult? (Ask for support, fourth change)

Physics is different from mathematics, physics contains too many types, such as as as people standing here, force is generated, movement, there will be friction.

The universe has a magnetic field.

Optics move in the body.

Cells in the body also breathe.

And so on, these are all test centers that can be expanded.

Traditional physics, on the other hand, is a rigid topic, and these topics are good for students, because these topics are more formulaic.

But if the physics topic becomes not rigid.

Combined with reality, then the title itself is interesting.

One: A small ball with a mass of M = 0.2 kg is placed on a vertical column, and the height of the column h=5 meters. A projectile passes horizontally through the center of the sphere, with a mass m = 0.01 kg and a velocity v0 = 500 m/s. The ball lands on the ground at a distance of 20 meters from the column s = 20 meters. Q: Where did the bullet land on the ground? How much of the kinetic energy of a bullet is converted into heat?

2. Throw a rectangular object onto the ideal elastic wall, one side of the wooden block is parallel to the wall the whole time, and its speed v is the wall

The normal of is at an angle of a, and the coefficient of friction of the wood block against the wall is . Find the relationship between the reflection angle and the incidence angle, and draw the function image of the relationship.

The writing on the scroll is very simple, different countries have different characters, this question, is to combine the force, and the data of one aspect.

The mathematical function used at the end is itself a difficulty point.

The combination of cartography, which is already semi-combined with practical problems.

Chen Fan looked at the question, and for a minute, wrote the answer.

Simple calculations were really too easy for Chen Fan, and there was no challenge.

If this is a physics problem, then Chen Fan feels that his teammates are okay.

But looking down, it’s not quite right.

Chen Fan found that the topic was running and flying.

These thirty points are not so easy to take.

What is being discussed and studied is two launch options for a space research program to launch a spacecraft outside the solar system. The first is to launch a spacecraft large enough to escape directly out of the solar system. The second option is to bring the spacecraft close to an outer planet and rely on its help to change the direction of the spacecraft to achieve the speed needed to escape the solar system. Suppose the spacecraft is only moving in the gravitational field of the sun or planets. So whether it is moving in the gravitational field of the sun or in the gravitational field of the planets depends on which field is stronger at that point.

All words, end, that’s all the conditions given.

Seeing the moment, a student goes crazy.

I’ll fuck you, are you playing Lao Tzu?

Your uncle’s, what kind of earth are you all about?

Why, the earth’s gravity can’t catch you?”

Or is the food at home not delicious, and there is nothing to study what physics?

Grandpa Hawking is also a pit man, you have nothing to guess about the universe, you even figure out what the universe can do?

A bunch of waste that can’t get out of the galaxy, what is nothing to do? 》

Disgusting to death.

What do I write?

What can I write now?

You give a little data.

However, there is nothing but basic symbolic data.

Look at the question again, this is written by people?

(1) According to scheme 1, determine the minimum velocity v1 and its direction relative to the Earth’s motion required to launch the spacecraft.

(2) Suppose the spacecraft has been launched in the direction determined in (1), but has another velocity v2 relative to Earth. Find the speed of the spacecraft as it passes through the orbit of Mars, that is, the parallel and vertical components relative to this orbit. When the spacecraft passes through Mars orbit, Mars is not near this intersection.

Hehe, hehe, Lao Tzu is going to kill the first person to go to the moon, and the first to go out of the earth.

Ahhhhhhhh

There is no need to read the latter at all, because it is already about to vomit, and it is already very difficult to simply read this question and extract the required answer.

Lao Tzu won’t, can’t you skip it?

Move on to the third question.

“On the side of the straight running track of a cycling arena, there is a slope with a high outside and low inside, with an inclination angle, and the length of the straight track is L and the upper end of the slope

The height is h, as shown in the picture, the athlete has a point A to start and end at A’. Athletes can choose to travel in a straight line AA’ or along a symmetrical polyline AMA’. If the speed of the bicycle at the time of departure is v0, and the driving force of the athlete pedaling is equal to the resistance during the journey, and the lateral friction between the wheel and the ground is enough to prevent the wheel from slipping, which route should the athlete take to achieve good results? ”

That’s great.

Hahaha, hahaha.

The boy reached out and grabbed his face, trying his best not to cry, he really couldn’t cry.

Be strong.

I think my mom made pizza and the turkey at home.

I’m going home, it’s not an exam, you’re murdering.

“That student, please don’t turn your head and ear, speed the problem.”

The best way to deal with geniuses is to make everyone stupid, including yourself.

This is physics, mathematics, and will help each other.

Physics is not against each other, because your research may be similar to mine.

Physics is a tyrant, and mathematics is only possible if you engage in stock speculation.

Physics always has to face difficulties from all walks of life, step by step climbing the Internet.

Chen Fan raised his hand.

“This student, what’s wrong with you?”

“It’s okay, hand in the papers.”

This one…… This one.

“Classmate, what do you say, I don’t quite know.”

“I said to hand over the paper, in addition, there is an error in the second question, the universe, I think the explanation of the magic group I gave is already very clear, a new theorem appears, then this shaped environment should not appear, this question, I refuse to answer, so, I hand in the paper.”

This one…… Nima’s.

Forgot about it.

Big guy, you have a theorem, you have to wait for us to digest it.

If you look like this, you will show that I am an idiot.

And Chen Fan handed over the papers and left, attracting the rest of the bastards in the examination room.

“Teacher, I also think…”

“Shut up, you are not Chen Fan, give me an honest answer.”

Yes, I want to complain, you treat us differently as a group of candidates.

ps: Please support, thank you all.