# Bullet hitting stationary Target.

In summary, a bullet with a mass of 0.005 kg and initial velocity of 20m/s penetrates deeply into a fixed target, slowing down due to a negative acceleration of 2000 m/sec sq. The distance it covers can be calculated using the formula S = Ut + 0.5at^2, giving a result of 30cm. The bullet's velocity decreases as it passes through the target, resulting in a negative acceleration. The approach used to solve the problem is correct and the answer has been calculated with the new knowledge about the acceleration direction.
A bullet of 0.005 kg traveling at 20m/s penetrates deeply into a fixed target and is brought to rest in 0.01 sec. The distace through which it penetrates is:

I used,

acceleration= V/t
= 20/.01
a = 2000 m/sec sq

Distace covered = Ut+0.5 at^2
= 20*0.01+0.5*2000*(o.o1)^2
S= 30cm.

Is it correct or any other solution is possible..?

The initial speed and the acceleration have opposite directions.

@willem2:

How is tat? can you please elaborate.

Does the bullet slow down or speed up as it moves through the block? So is acceleration positive or negative?

Acceleration reduces as the bullet enters the target.

so acceleration is negative...

so acceleration is negative...

The velocity reduces as it passes through the target. So yes, acceleration is negative (in the direction opposite to the velocity).

I understand ur point. So is the approach right? And how about answer?

The approach is fine. How about the answer? Have you calculated one with the new knowledge about the acceleration direction?

## 1. How does the velocity of the bullet affect its impact on a stationary target?

The velocity of the bullet plays a crucial role in determining the impact it will have on a stationary target. The higher the velocity, the greater the force of impact and the deeper the penetration into the target. This is due to the kinetic energy of the bullet, which is directly proportional to its velocity.

## 2. What factors influence the accuracy of a bullet hitting a stationary target?

The accuracy of a bullet hitting a stationary target is influenced by several factors, including the velocity and trajectory of the bullet, the wind conditions, the distance between the shooter and the target, and the quality of the firearm and ammunition used.

## 3. How does the shape of the bullet affect its impact on a stationary target?

The shape of the bullet can greatly impact its trajectory and penetration on a stationary target. A pointed or aerodynamic shape can help the bullet maintain its velocity and travel deeper into the target, while a flat or rounded shape may cause it to lose velocity and energy upon impact.

## 4. Can a bullet hitting a stationary target cause secondary injuries?

Yes, a bullet hitting a stationary target can cause secondary injuries due to the shockwave created by the impact. This shockwave can damage surrounding tissues and organs, even if the bullet does not directly hit them.

## 5. How can the angle of impact affect the damage caused by a bullet hitting a stationary target?

The angle of impact can greatly affect the damage caused by a bullet hitting a stationary target. A perpendicular impact will result in the maximum transfer of energy and damage, while an oblique angle may cause the bullet to deflect and reduce its impact on the target.

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