ask:

What is the acceleration due to gravity at 40 degrees north latitude?

If you jump from fifteen meters in the air here, how many seconds will it take to land?

answer:

From h=gt we can get:

t=√2h/g=√2×15/9.8 s≈√3.061224s≈ 1.75s

That is about 1.75s.

1.75 seconds, according to the breathing rate of a normal person, may not even be enough time to breathe in and out.

However, the thrill of jumping from a high altitude will make people unconsciously quicken their heartbeat and hold their breath at the same time.

Also, adrenaline is secreted quickly.

Bid was in such a state at this time.

No, even more wonderful.

These 1.75 seconds felt so long to him.

He could clearly feel himself blinking, and then he saw the dust that had accumulated on the ground because no one had been there for so long.

Under a wooden board, several industrious worker ants could be seen struggling to carry the body of a dead little spider.

Afterwards, Bid even turned around in the air!

He saw a row of heads poking out from the beams.

Shadow Spider-Man's unreal appearance is hidden under the mask.

Spider Pigman was still chewing a hot dog in his mouth, but his eyes were looking down over the pig's nose.

Middle-aged Peter stretched out his right hand in a shooting motion, as if he was ready to rescue at any time.

Gwen's eyes were calm, but her fingers were pressed on the spider silk launcher.

"Launch!" Shadow Spider-Man's voice sounded, awakening Bide from this strange state.

Bid subconsciously pressed the spider silk launcher button in his palm.

call out--

A ball of white substance flew out from his wrist and stuck firmly to the ceiling.

Duang!

Bide's body suddenly stopped the moment it was about to touch the ground, but this transformation from extreme movement to extreme stillness only made Bide slightly uncomfortable and did not bring much burden to his body.

But Bid did not notice this.

Because now, he was using the momentum of the spider silk to shoot out, and his body also flew upwards.

Bang!

Bid's figure hit the ceiling heavily, and his limbs stretched out subconsciously.

Then, he hung there upside down steadily!

His ability is finally activated!

Amazing perspective!

A strange world!

Bide thought he would be very excited, but at this moment, with his body hanging upside down from the ceiling in an inhuman way, he found that he felt extremely calm inside.

It's as if this is the world that should belong to him!

This is what he should look like!

Whoosh——

A figure appeared next to Bide.

It's Shadow Spider-Man.

His slightly gratified voice came out from under the mask: "Great, you did it!"

"Yes, thank you," Bid thanked him sincerely. Without the encouragement of Shadow Spider-Man, he didn't know how long it would have been before he dared to take this step.

"What about me?" Spider-Pigman also flew over in a swish.

"Well, of course, I want to thank you too," Bid smiled.

"And me?" Gwen somehow came to join in the fun.

Bid: "Okay, thank you too."

Whoosh——

Middle-aged Peter also came near Bede.

Bid quickly stretched out his hand: "You don't need to say anything, I'm very grateful to you too!"

"Hahaha——" Everyone burst into laughter.

Uh-huh!

At this moment, whether it was because he was not proficient in using the ability just after it was activated or something else, the biological static electricity in Bied's hand suddenly failed, and he fell down as soon as he let go.

"Fuck!" Bid screamed, and quickly stretched out his hand to spit out another spider silk.

With the help of the pull of the spider silk, he returned to the ceiling.

"It seems you need to practice more." Gwen said seriously.

"Okay, let's go back to the steel," Shadow Spider-Man hung on the ceiling with one hand and pointed downward with the other hand, very relaxed and comfortable.

Bid was quite envious of this.

Because now, when he is not holding on to the spider's thread, he can only feel more at ease when his hands and feet are pressed against the ceiling at the same time.

Otherwise, you might fall down like just now.

He put his hands and feet on the ceiling, turned his head and looked back, and estimated the distance between himself and the beam.

Then

Bid jumped up and fell rapidly towards the beam like a spider ejected.

Snapped!

Bid slapped his hand heavily on the beam and took a breath.

It turned out that he was using too much force, which caused him to jump over his head.

But at this time, he subconsciously grabbed the beam and naturally hit it hard.

Bid subconsciously let go of his hand.

At this time, a soft palm stretched out and held his wrist.

Bid looked up and saw that it was Gwen.

Gwen exerted a slight force.

Bid used this force to get on the crossbar.

"Thank you," Bid thanked Gwen after letting go.

Gwen smiled slightly: "You're welcome, you'd better practice quickly. When the gadget is finished, we have to go find the big boss Jin Bin together."

"Yeah!" Bid nodded repeatedly.

The so-called once born, the second time familiar.

After the first experience of successfully launching spider silk and climbing and crawling, the second and third times naturally appeared quickly.

This time, Bide didn't even need anyone to urge him. After adjusting slightly, he jumped off the crossbar again.

Thanks to his previous experience playing "Spider-Man", after finding the initial feeling, his proficiency in using spider silk began to increase rapidly.

And soon, he found pleasure in it.

His figure flew back and forth wantonly in the abandoned warehouse, even using his increasingly proficient passive - super sensitivity to find some obstacles to pass through.

flight!

It has always been a dream of mankind.

In the east, there are those who ride on swords, and in the west, there are those who ride on broomsticks and ascend to the sky.

And now, he can fly freely in the air with the help of spider silk!

Even if there is nothing else, this alone is already worth a thousand dollars.

While Bid was playing happily alone, Shadow Spider-Man and middle-aged Peter were also looking at him.

Middle-aged Peter commented: "This guy's understanding is quite good, he's already got a good shape!"

Spider Pigman said: "I think his moves are pretty cool. Oh, look at this mid-air spin, my God!"

Gwen also agreed: "His movements are like a dancer, the steps in the air, although they are not particularly beautiful, but they are full of potential. I think I like him a little bit."

Shadow Spider-Man shook his head: "It looks good, but there are too many fancy moves. But from a novice's point of view, it's barely qualified."

"Hey, man, don't be so harsh, he's just getting started," said middle-aged Peter.

Shadow Spider-Man shrugged: "Okay, I think it's good too. But I still have to correct his behavior. It's very dangerous. There's no need to be so fancy."

After Bid had been familiar with it for about half an hour and felt that he had basically mastered the cooperation between the web and the body, Shadow Spider-Man stopped him.

"Hey, Bede, if you keep playing like this, this room will be full of spider webs and we won't be able to stay here!" Shadow Spider-Man shouted.

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