# [Physics Video ISU Help] Car Crashes.

• Redtrack
In summary, in your video about Race Car Crashes and Physics, you have already covered Newton's Three Laws, safety precautions such as headrests, seatbelts, and airbags, and concepts of momentum and impulse, as well as elastic and inelastic collisions. Other topics you can consider discussing include the importance of helmets and head and neck support devices, the use of wide racing seatbelts, and examples of drivers surviving high g-force crashes. Some good resources to consider for your video may include the FIA website and websites for various motorsport organizations such as Indy car, NASCAR, WRC, V8 Super Car, and Formula 1.
Redtrack

## Homework Statement

Ive been assigned to create a video about Race Car Crashes, in relation to Physics.

## Homework Equations

So far I've talked about :
- Newton's Three Law
- Safety Precautions (HeadRest, Seatbelt, Airbag)
- Momentum and Impulse
- Elastic and Inelastic Collisions

What else can I talk about in my video, thanks!

Redtrack said:

## Homework Statement

Ive been assigned to create a video about Race Car Crashes, in relation to Physics.

## Homework Equations

So far I've talked about :
- Newton's Three Law
- Safety Precautions (HeadRest, Seatbelt, Airbag)
- Momentum and Impulse
- Elastic and Inelastic Collisions

What else can I talk about in my video, thanks!

Not too sure how many race Cars have airbags!

Matters to include would be Helmets, HANS device [Head and neck support] also known as Head Restraint.
Hopefully you haven't included too much about head on collisions, since race cars all travel in the same direction. Not too many elastic collisions either!

Also why Racing seat belts are so wide - usually 3" where as road belts [and cheaper race belts] are only 2" wide.

Thanks. Do you have any good resources I could use? Videos/Sites?

Redtrack said:
Thanks. Do you have any good resources I could use? Videos/Sites?

No. I just watch motorsport on TV and take part in low level motorsport.

If you google, you may be able to find reference to the examples when driver have survived much much more than 10g acceleration [deceleration] in crashes.

For the last 10-20 years, many crash barriers are covered with layers of old car tyres. Obviously for a reason.

Try the FIA site, or Indy car, nascar, WRC, V8 Super Car, Formula1, ... depends what country you are from.

I am glad to see you incorporating physics into a real-world scenario like race car crashes. Here are some additional concepts you could consider including in your video:

1. Kinetic Energy: Race car crashes involve a significant amount of kinetic energy, which is the energy an object possesses due to its motion. You could explain how this energy is transferred during a crash and how it can impact the severity of the crash.

2. Friction and Traction: The friction between the tires and the road surface plays a crucial role in controlling the car's motion. You could discuss how different types of tires and road conditions can affect the car's traction and ultimately its ability to stay on the track and avoid crashes.

3. Center of Mass: The center of mass is the point at which an object's mass is evenly distributed. In a race car, the location of the driver's center of mass can affect the car's stability and handling, which can impact the likelihood of a crash.

4. Drag and Downforce: Race cars are designed to have minimal drag and maximum downforce, which helps them maintain stability and control at high speeds. You could explain how these aerodynamic forces work and how they can affect a car's performance and potential for crashes.

5. Energy Dissipation: When a car crashes, the energy from its motion needs to be dissipated to reduce the impact on the driver. You could discuss different ways that energy can be dissipated, such as crumple zones, to minimize the force experienced by the driver.

I hope these suggestions help you expand on your video and showcase the fascinating physics behind race car crashes. Good luck!

## 1. What is the physics behind car crashes?

The physics behind car crashes involves the principles of momentum, velocity, and energy. When a car is in motion, it possesses kinetic energy. The faster the car is moving, the more kinetic energy it has. When a car crashes, the kinetic energy is transferred to other objects, causing damage and injuries. Additionally, the conservation of momentum states that the total momentum before the crash is equal to the total momentum after the crash. This means that the force of impact is determined by the mass and velocity of the vehicles involved.

## 2. How do seatbelts and airbags protect passengers during a car crash?

Seatbelts and airbags work together to protect passengers during a car crash. Seatbelts keep passengers from being thrown from the vehicle, while also spreading out the force of impact across a larger area of the body. Airbags are designed to deploy upon impact and provide a cushion for the head and upper body, reducing the force of impact and preventing injuries.

## 3. What role does friction play in car crashes?

Friction plays a crucial role in car crashes. Friction between the tires and the road surface allows the car to maintain control and stop when the brakes are applied. However, in some cases, too much friction can cause the car to skid or lose control. This is why it is important to maintain proper tire pressure and have good tire treads to ensure optimal friction on the road.

## 4. How do the laws of motion apply to car crashes?

The laws of motion, specifically Newton's first and second laws, apply to car crashes. Newton's first law states that an object in motion will stay in motion unless acted upon by an external force. This means that a car will continue to move with the same speed and direction unless a force, such as a collision, acts on it. Newton's second law states that the force of an object is equal to its mass multiplied by its acceleration. This explains why cars with more mass will experience a greater force of impact in a crash.

## 5. How do engineers use physics to design safer cars?

Engineers use physics principles to design safer cars by incorporating features such as crumple zones, seatbelts, and airbags. Crumple zones are designed to absorb the energy of a crash, reducing the force of impact on the passengers. Seatbelts and airbags are strategically placed to protect the most vulnerable areas of the body during a collision. Additionally, engineers use physics simulations and crash tests to evaluate and improve the safety of car designs.

• Introductory Physics Homework Help
Replies
9
Views
3K
• Classical Physics
Replies
46
Views
3K
• Introductory Physics Homework Help
Replies
15
Views
3K
• Introductory Physics Homework Help
Replies
4
Views
1K
• Introductory Physics Homework Help
Replies
13
Views
4K
• Introductory Physics Homework Help
Replies
1
Views
2K
• Introductory Physics Homework Help
Replies
4
Views
8K
• Introductory Physics Homework Help
Replies
10
Views
1K
• Introductory Physics Homework Help
Replies
4
Views
4K
• General Math
Replies
1
Views
1K