A slope, people go up and down to save effort

Of course, it is downward, first of all, gravity is downward, people have to overcome gravity to do work in order to go up, and when it goes down, gravity does positive work, that is, when you go up, gravity pulls you, and when you go down, gravity pushes you, so you save effort when you go down.

When walking upward, you need to overcome gravity to do work, but when you go down, you don't need to, because it is the same to overcome friction when going up and down, and it is more laborious to go up when the distance is equal.

From a physical point of view, going up is as laborious (or labor-saving) as going down.

In terms of the absolute value of the work done, the upward and downward two are equal.

Although one is to do positive work and the other is to do negative work, the former is: the human body's chemical energy is converted into human potential energy, and the latter is the human body's chemical energy is converted into human kinetic energy to increase (the increase is a negative number), and the value of chemical energy consumed by the human body in both cases is the same.

Therefore, it is just as laborious for people to go up as they are to go down.

It must be downward.

When you go down, you convert the gravitational potential energy you already have into kinetic energy, and you don't need to do any work yourself.

When you go up, you convert your kinetic energy (which is the energy you do work) into potential energy.

None of the above is correct. I'm a sloper. First of all, you have to see what you say is the slope of this slope.

If it's 0 degrees, it's flat, and it's the same no matter how you go. If it's 90 degrees, it's vertical, and you have to struggle to climb up. Having said that there are two limits, let's take the middle value.

That is, if the slope is less than 90 and greater than 0, then the effort of the uphill slope will decrease with the decrease of the slope.

As for the downhill, when it is 90 degrees, the downhill does not exert force, and it falls directly. At 0 degrees, the effort is the same as that of the uphill slope, so it can be said that the downhill is always less labor-saving than the uphill.

Go down with less effort. Because going up is to convert kinetic energy into gravitational potential energy. Accumulate energy. Going from top to bottom is to convert kinetic potential energy into kinetic energy. Unleash energy. So go down and save effort.

Go down with less effort.

Go down and do negative work.

Go up and do the right thing.

In reality, you should be more careful with the bottom than the top (mainly for knee injuries).

The inclined plane is a labor-saving machine; The smaller the slope of the inclined plane, the more effort is saved, so Xiao Hong goes up the mountain from the steep slope, and Xiao Ming goes up the mountain along the gentle slope, and Xiao Ming saves effort in the whole process; From w=gh, it can be seen that the useful work is the same, so they do the same work

So the answer is: Xiao Ming; Same