Chapter 196

Bai Yan pupil suddenly shrinks.

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

The woman in the red dress, at this time

It's in a pool of blood.

Bai Yan's face became extremely ugly.

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

With that, Bai Yan glanced at the passers-by who was gradually gathering around here and frowned.

Then, immediately, he walked down the second floor without stopping.

Now, downstairs.

There were many pedestrians around the red skirt woman.

The woman in red, eyes closed, fell in the pool of blood, body, there is still gurgling blood outflow.

Scattered long hair, has been dyed a little red with blood.

Some of the timid girls who were watching had already sent out a scream, covering their eyes with fear.

"And Are you alive? "

Standing in the front row of a few big men, a look at me, I look at you, no one has the courage to check.

However, if you fall down from such a high building, you have a chance to survive

Almost zero!

After all, this large commercial building is 12 stories high.

"Police, give way, police!"

When the onlookers were hesitant, Bai Yan, who was panting from the upstairs, took out his police card and yelled to the onlookers.

The crowd consciously made way for Bai Yan.

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

In the eyes of the onlookers, Bai Yan gently shakes his head and sighs helplessly.

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

Bai Yan grinned bitterly, "can't save..."

Hearing Bai Yan's words, they all sighed.

Face, with regret, and do not understand.

Looking at the girl who fell from the building, she was about 20 years old. She was in love with her life. How could she be so upset that she jumped off the building like this?

Obviously, in the minds of passers-by, the red dress girl, 80% of what has something to worry about, chose to jump to suicide.

Bai Yan gets up, around the body of the girl in the red skirt, turns a few circles, drags the chin, frowns to think.

Then I looked up at the commercial building with a height of more than 40 meters. Finally murmured to himself, "really, is it suicide?"

Bai Yan picked up the phone and called the Qingcheng police station.

"Captain Yang, it's me, Baiyan!"

"In the Southern District of Wanxiang commercial building, there has just been a fall."

"It was a young woman who fell. Death has been confirmed. "

"I can't judge whether this is a suicide or a premeditated one for a long time."

"He killed!" Bai Yan's words are taken over by Cheng Nuo.

Cheng Nuo did not know when, but also came downstairs.

And in his back, also follow Mu Leng and Su Xiaoxiao two women, as well as Bai Yan's girlfriend.

At this time, Cheng Nuo looked at the corpse in the pool of blood with a heavy face and said in a positive tone, "detective Bai, this case of building fall is not a suicide, but a He killed

Bai Yan turned his head and looked at Cheng Nuo seriously. "Cheng Nuo, why are you so sure?"

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

But at present, Bai Yan has no evidence to prove that this is a homicide case.

The specific judgment, but also wait for him to get 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?

In the face of Bai Yan's query, Cheng Nuo smiles faintly, points to the commercial building, and says slowly.

"Just now we saw the dead on the second floor. When we fell in the air, the time in our sight was about 0.1 second."

"The building was built to strict standards. The height of each floor is 3.10 meters. The float is 0.02 meters. "

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

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

"The gravity acceleration of our Qingcheng location is 9.8146 meters per second. The weather forecast said there was no wind today, so the effect of wind was ignored. "

"According to the parabola theorem, H = 12 ^ 2, as I mentioned above, the time taken for the dead to be on the second floor, that is, in the 3.10 meter Displacement on the second floor, is 0.10 seconds."

"It can be roughly concluded that the speed of the dead to the top of the second floor is 29.58 Ms

"It can be inferred that the whole process of the fall took 3.58 seconds. Displacement 46.68 m ""Therefore, the location of the deceased must be on the roof of the building! Not other floors! "

Cheng Nuo glances at Bai Yan, who has been stunned and grows up. He doesn't know what to say and continues to start his reasoning.

"We approximate the fall of the dead into a flat motion. If the victim's fall is vertical, then she should fall. Or even if the victim jumps forward a little bit before committing suicide. Then her acceleration in the horizontal direction will only be 0.5 ms at most

"There is no wind today, so the influence of wind can be ignored. The resistance is too small, and the fall mode of the dead is vertical. The resistance is ignored, which does not affect the final calculation. "

"According to the calculation, if you commit suicide, the landing position of the deceased should be within 0-3 meters of the commercial building."

"But now?" Cheng Nuo points to the location of the dead.

"It is clear that the horizontal distance from the building was 10 meters away. It is calculated that the horizontal velocity of the deceased at the time of falling is about 4 seconds. "

"Unless someone is behind the dead and gives them a huge push. Otherwise, the falling position of the dead will never Here it is

He said, "this is not a case of Bai Yanpu's suicide. Instead, a premeditated Intentional murder

Bai Yan immediately responded and yelled at the crowd. "Everyone should stay away from the body to avoid damaging the scene of the crime."

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

Just now he was startled by Cheng Nuo's analysis, but he forgot to call captain Yang.

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

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

Bai Yan glanced at the bag and looked around. Cheng Nuo, who seemed to be searching for something, nodded, "yes, I happened to meet in the mall today. He's 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 estimated that those data mentioned by Cheng Nuo should be correct? "

Although the heart is unwilling to admit, but in order to crack the case, Bai Yan still nodded and replied, "yes, I am not sure about the specific data, but there is no error that should be analyzed!"

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