Hey.. I'm not trying to get people t do my homework, but I jus need some assurance for physics?

Question

"Don't be fooled. Speed kills"
Do you agree with this slogan? Explain whether or not u agree with reference to a passenger not wearing a seatbelt, and ohysics laws/equations to substantiate your answer

Answer 1

Definition required! Speed ( drugs ) kills? yes, those kinds of drugs (illeagle) will kill you. Now "speed kills....not necessarily. take a space craft at 18,000 MPH in space. in the picture of your caveates. seat belts tend to save your life...your not prone to doing mach1 thru the windshield or over the frame if it's a convertable. do things in moderation and thought. there really isn't any spare parts for bodies

Answer 2

If the car is travelling at high speed and gets into a collision which results in a sudden stop, the passenger's momentum will keep him moving forward at the same speed the car had when it stopped (Newton's first law: an object in motion will maintain that motion unless acted on by an external force). The passenger will eventually hit the front of the car at that speed. His energy is 0.5*m*v^2, where m is his mass and v his velocity. The faster the car was moving before the collision, the more energy the passenger has when he hits the front of the car. This means more force needed to stop him, and the more force nedeed means more damage to the passenger. If the passenger is stopped in a distance d (after hitting the front of the car), the force needed to stop him is 0.5*m*v^2 / d. As you can see, the damage-causing force increases as the square of the car's velocity, therefore speed kills.