Seberapa Cepat Peluru Bisa Melesat?

Summary

This video explores the fascinating science behind bullets, comparing their speed to everyday objects like cars and airplanes. It reveals how bullets, especially those used by police, travel at an incredible 350 meters per second, and how faster projectiles, like railguns, can reach up to 2,000 meters per second. The video also touches on the physics of projectile motion and how relative speed works, using the example of a bullet shot from a moving train. Through engaging examples and explanations, the video sheds light on how physics impacts the world of firearms and projectiles.

Takeaways

• 😀 Average motorbike speed in Indonesia is 50 km/h, while cars on highways travel at 70 km/h, and planes fly at 800 km/h.
• 😀 Standard police bullets travel at a speed of 350 meters per second, which is roughly the speed of sound.
• 😀 A bullet traveling at 350 meters per second could cross an entire futsal field in the blink of an eye.
• 😀 The fastest bullets can travel up to 1400 meters per second, which would allow you to travel from Jakarta to Surabaya in just 13 minutes.
• 😀 A bullet’s speed increases when the gunpowder inside the cartridge is ignited, creating an explosion that propels the bullet faster.
• 😀 The faster the powder burns, the more pressure and longer duration it has to push the bullet out of the barrel.
• 😀 A thinner, lighter bullet reduces air resistance and can travel faster.
• 😀 If we align a pistol with a moving vehicle, the bullet's speed relative to the vehicle can appear faster to an observer outside the vehicle, but the bullet's speed remains the same for someone inside.
• 😀 This phenomenon is based on the principle of relative velocity, which was theorized hundreds of years ago.
• 😀 Railguns, which use powerful magnetic fields instead of gunpowder, can propel bullets at speeds of 2000 meters per second.
• 😀 At 2000 meters per second, a railgun-powered bullet could travel from Sabang to Merauke in just 43 minutes.
• 😀 The concept of relative velocity can make it seem like a bullet traveling in a moving vehicle is stationary, similar to running on a treadmill where you’re not moving forward.

Q & A

What is the average speed of a motorcycle in Indonesia?

The average speed of a motorcycle in Indonesia is 50 km/h.

How fast is a typical bullet fired by the police?

A typical bullet used by the police travels at a speed of 350 meters per second, which is approximately the speed of sound.

How fast is the fastest bullet compared to a typical one?

The fastest bullets can reach speeds of up to 1400 meters per second, which is more than four times the speed of the typical police bullet.

How long would it take for the fastest bullet to travel from Jakarta to Surabaya?

At a speed of 1400 meters per second, the fastest bullet could travel from Jakarta to Surabaya in just 13 minutes.

What happens when gunpowder is ignited in a gun?

When the gunpowder is ignited, it creates an explosion that pushes the bullet forward. The more powerful the explosion, the faster the bullet can travel.

How does the shape and material of the bullet affect its speed?

A thinner bullet with a lighter material experiences less air resistance, allowing it to travel faster.

Can the speed of a bullet be increased beyond typical levels?

Yes, the speed of a bullet can be increased with specialized technology, such as railguns.

How does a railgun work to shoot a bullet faster?

A railgun uses a powerful magnetic field to propel the bullet at speeds of up to 2000 meters per second, much faster than conventional gunpowder-based firearms.

What is the concept of relative speed demonstrated in the train example?

In the train example, the relative speed principle shows that if you are in a moving train and shoot a bullet in the direction of the train's motion, an observer inside the train will see the bullet moving at the same speed, while an observer outside will see the bullet moving faster.

What happens to the bullet's speed when fired inside a moving train?

When a bullet is fired inside a moving train, the bullet's speed relative to an observer inside the train will appear the same as if the train were stationary. However, for an observer outside, the bullet will appear to travel faster due to the train's motion.