Omnipotent Data

High-speed text first

Mobile synchronous reading

Bai Yan's pupils shrank suddenly.

Without any hesitation, he pushed away the passers-by around the window and looked down downstairs.

The woman in the red dress, at this time...

Has fallen in a pool of blood.

Bai Yan's complexion instantly became extremely ugly.

He said to his girlfriend in a deep voice, "A Mei, call 120!"

After finishing speaking, Bai Yan glanced at the passers-by who had gradually gathered around him, and frowned.

Then, immediately walked down the second floor without stopping.

At this point, downstairs.

Beside the woman in the red dress, many pedestrians had already surrounded her.

The red-clothed woman's eyes were closed tightly, and she fell into a pool of blood, with gurgling blood continuously flowing out of her body.

Her long, disheveled hair had already been stained red with blood.

Some of the timid girls who were watching had already let out a scream, covering their eyes tightly in fear.

"Still...alive?"

The big men standing in the front row looked at me and you, but no one had the guts to step up and check.

However, falling from such a high building, the odds of surviving...

It can be almost zero!

After all, this large commercial building can be as high as twelve floors.

"Police, step aside, police!"

Just when the onlookers were hesitating, Bai Yan, who ran upstairs panting, took out his police ID and shouted to the onlookers.

The onlookers consciously made way for Bai Yan.

Bai Yan came to the woman in the red skirt, squatted down, first tested her breath, and then opened her eyelids.

Under the eyes of the surrounding audience, Bai Yan shook his head lightly,

Helplessly sighed.

A middle-aged man asked, "Officer, she..."

Bai Yan smiled wryly, "It can't be saved..."

Hearing Bai Yan's words, everyone sighed in unison.

There was regret and bewilderment on his face.

Looking at this girl who fell from a building, she was about twenty years old, in the Mood for Love, how could she not think about it, and just jumped off the building like this?

Obviously, in the minds of passers-by, the girl in the red skirt probably couldn't think about anything, so she chose to commit suicide by jumping off the building.

Bai Yan got up, turned around the corpse of the girl in the red dress a few times with his head down, dragged his chin, and frowned in thought.

Then he raised his head and looked at the commercial building that was more than forty meters high. In the end, he muttered softly, "Really, is it suicide?"

Bai Yan picked up the phone and called the Qingcheng Police Station.

"Captain Yang, it's me, Bai Yan!"

"At the Wanxiang Commercial Building in the southern part of the city, a case of falling from a building just happened."

"The person who fell was a young woman. She has now been confirmed dead."

"I still can't decide whether this is suicide or a long-planned..."

"Kill him!" Bai Yan's words were taken over by Cheng Nuo.

Cheng Nuo also came downstairs at some unknown time.

And behind him, there were two daughters, Mu Leng and Su Xiaoxiao, and Bai Yan's girlfriend.

At this time, Cheng Nuo looked at the body lying in the pool of blood with a heavy expression, and said in a firm tone, "Detective Bai, this falling from a building is not a suicide, but a...homicide!"

Bai Yan turned his head and looked at Cheng Nuo with a serious expression, "Cheng Nuo, why are you so sure?"

Bai Yan also suspected that this case of falling from a building might not be a simple suicide case.

But at present, Bai Yan doesn't have any evidence to prove that this is a homicide case.

The specific judgment will have to wait until he gets the specific identity information about the deceased.

But what Bai Yan didn't expect was that Cheng Nuo could be sure that this woman was killed by him?

Facing Bai Yan's doubts, Cheng Nuo smiled lightly, pointed at the commercial building, and spoke slowly.

"Just now we saw the deceased on the second floor. When he fell in the air, he stayed in our sight for about 0.1 second."

"This commercial building was built according to strict standard specifications. The height of each floor is 3.10 meters. The up and down float is 0.02 meters."

"Of course, at the entrance on the first floor, there is a flight of stairs with a height of about 0.5 meters."

"Then, the height of the whole building is about 47 meters."

"The acceleration of gravity where we are located in Qingcheng is 9.8146 meters per square second. The weather forecast says there will be no wind today, so the influence of wind force is ignored."

"According to the parabola theorem, h=1/2gt^2. As I mentioned above, the deceased was on the second floor, that is, the time it took for the 3.10-meter displacement on the second floor was 0.10 seconds."

"Approximately, it can be concluded that when the deceased reached the top floor of the second floor, his speed was 29.58 m/s."

"Thus it can be inferred that the entire falling process of the deceased took 3.58 seconds. The displacement was 46.68 meters"

"So, the place where the deceased fell must be on the roof of the building! Not on other floors!"

Cheng Nuo glanced at Bai Yan who was already stunned, his mouth wide open, not knowing what to say, and continued to reason.

"We approximated the deceased's falling from the building as a flat throwing motion. If the deceased committed suicide, then the trajectory of her fall should be a vertical fall. Or, even if the deceased jumped forward a short distance before committing suicide. Then she The acceleration in the horizontal direction will only be 0.5 m/s at most."

"There is no wind today, so the influence of the wind force can be ignored. The resistance is too small, and the way the deceased fell was a vertical fall, and the resistance is negligible, which does not affect the final calculation."

"It can be calculated that if suicide occurs, the deceased's landing position should be within 0~3 meters from the commercial building."

"But now?" Cheng Nuo pointed to the location of the deceased.

"Obviously, the deceased was 10 meters away from the building horizontally. It is calculated that the horizontal speed of the deceased when he fell was about 4 seconds."

"Unless someone is behind the deceased and gave the deceased a huge push. Otherwise, the falling position of the deceased will definitely not... be here!"

Cheng Nuo stared at Bai Yan, and said word by word, "This case of falling from a building is not an ordinary suicide. Rather, it is a premeditated... deliberate murder!"

Bai Yan reacted immediately and shouted loudly at the crowd watching. "Everyone stay away from the corpse to avoid damaging the scene of the crime."

After speaking, Bai Yan picked up the phone in his hand.

He was shocked by Cheng Nuo's analysis just now, but he forgot, and he still hasn't hung up on the call to Captain Yang.

Bai Yan said, "Captain Yang, are you still there?"

"Still there?" Captain Yang replied, "Cheng Nuo is beside you?"

Bai Yan glanced at Cheng Nuo, who was carrying his pocket and looking around, as if searching for something, and nodded, "Yes, I happened to meet him in the mall today. He is by my side now."

Captain Yang's voice suddenly became extremely serious, "Bai Yan, I have heard Cheng Nuo's analysis of this case just now. Although I was not at the scene, I guess the data that Cheng Nuo said should not wrong?"

Although he didn't want to admit it, but in order to solve the case, Bai Yan nodded and replied, "That's right, I'm not sure about the specific data, but there should be no mistakes in the analysis!"