Physics Of Kinetic Energy And Stopping Distance

In one or more complete sentences, explain how natural laws apply to the following scenarios: How does inertia affect a person who is not wearing a seatbelt during a collision? Before a collision occurs, a car is going a certain speed. A collision causes the car to stop or slow down drastically. Everything that is in the car will still be going the same speed that the car was going, unless it is either stopped by a seatbelt or held down in some other way. A person in a seatbelt, would stop with the car, while a person without a seatbelt would follow its path of inertia keep moving.

When the car is moving at 70 mph, the passenger/driver is moving at 70 mph. if the car suddenly hits a wall. the car stops moving, but the passenger is still moving at 70 mph... the seat belt prevents the passenger from flying out of the windshield / cutting their head open on the windshield. (this is based on inertia)

In a head-on collision, the car and its restrained driver (or passenger) come to a rapid stop while

A 15 kg uniform disk of radius R = 0.25 m has a string wrapped around it, and a m = 3 kg weight is hanging on the string. The system of the weight and disk is released from rest.

Impulse - Impulse is the change in momentum, Initial Momentum - Final Momentum or Force x Time. This means that because momentum is Velocity x Mass, a heavier car traveling at the same Velocity as an older car will have a larger momentum, therefore if both cars crashed into a wall at the same speed and both and end up with a speed of 0ms-1, the Change in Momentum (Impulse) will be higher for the heavier car. Because Impulse is also equal to Force x Time, we can look at the stopping Force of the and how we can lower it.

With the evidence given in the crash report involving the Volkswagen Passat and the Ford Transit van, the ultimate outcome of the velocities of each vehicle resulted in an elastic collision. An elastic collision is the end result of when two objects collide and instead of bouncing off of each other, the two objects are stuck together ( Urone, 294). Given from the crash report provided, both of the drivers were driving through an area with the speed limit at 35 miles per hour. With the evidence given, the likelihood of the collision was due to a driver exceeding the speed limit which would require a longer extended period of time that would be required to stop compared to if both vehicles were following the posted speed limit. From the photographs

Newton’s First Law (aka inertia) states that an object in motion will stay in motion with the same speed and direction unless acted upon by an unbalanced force. If a car was travelling at 80km/hr, everything inside the car including the passengers will also be travelling at 80km/hr. If that car hits a brick wall, the car would stop moving but the passengers would continue moving at 80km/hr until they hit a solid object such as the headrest or the wall unless they were wearing a seatbelt. Seatbelts also stretch when force is applied, which helps dissipate the inertial energy and reduce the speed at which the passenger is travelling.

The more time the drivers are acted on by the force, the less damage there will be. This can be seen in seatbelts. During normal circumstances, you can move easily with your seatbelts on but when the collision occurs, the retractor mechanism tightens up in order to help the drivers stay in place. However, it also loosens up a little allowing the force to spread over a period of time, causing less damage. Another area we can see the idea of impulse is through airbags. When the airbag inflates and the car comes to a stop, the driver’s head hits the airbag and the airbag deflates at a slow rates which decreases the change in momentum. This decrease of momentum makes the force when the head gets in contact with the airbag lesser than if it was

Newton’s first law states that an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force. It is this principle that applies to passengers within a car. Passengers will continue to move forward at the same speed until they come in contact with a part of the automobile or another human being, causing injury. Even after a human body comes to a stop in an accident, its internal organs continue to move, slamming against each other because of the impact, often causing serious injury or death. Newton’s second law of motion, force = mass x acceleration, conveys that as the time it takes for an automobile to

In addition, the stopping distance is longer considering the weight factor of the vehicle. Both these issues make this automobile very dangerous to the driver, passengers, other motorist, pedestrians, and small furry animals. On the other hand, the lower center of gravity that the car has to offer makes this vehicle less likely to roll over. There is also a shorter stopping distance for the car considering the weight of the car is much lighter.

Basically the higher the speed of a vehicle, the more difficult collision avoidance becomes and the greater the damage if a collision does occur.

Along with accidents not only comes a little headache or a broken bone, but injuries that stay with you forever such as whiplash and brain damage. Most brain damage incidents occur when you are involved in a side impact collision and the side of your head hits the glass (brain injury). Side impact airbags are just one of the many ways in which this type of life threatening injury can be avoided (whiplash). There is also whiplash, which hurls your head violently, and usually results in long term disability. Since whiplash is so hard to avoid, it can only be avoided by reducing the number of accidents on the streets. Also one of the most painful and most traumatizing injuries that we encounter in accidents are bone fractures, which occur in 65% of all accidents (Bush 11). So in turn by making these cars safer we can all avoid these painful, traumatizing, life-threatening injuries.

Kinetic energy is a type of energy that happens when movement is provoked and when friction happened we learned about it in science class this year.

The research question I have selected is “How do the laws of motion apply to automobiles?” I choose this topic because there is plenty of concepts used in physics that can be applied to the topic that I chose. Also this question targets an everyday object and is a real life example of how physics applied to the world and my life. One concept that can be applied to this question are Newton’s Laws of Motion. Newton’s first law is called the Law of Inertia. This states that an object in motion will stay in motion and an object at rest will stay at rest unless acted upon by an unbalanced force. For example, the automobile will continue moving at the same rate if unbalanced forces like friction and air resistance were not present. If there is an opposing force like another car that comes into contact with the vehicle and causes a collision, the car will change in motion and speed. The second concept that can be applied is Newton’s second law of motion. Newton’s second law of motion is force is equal to mass times acceleration. If there is a greater mass, then there has to be more force to accelerate the object. For example, an automobile has to have the required force act on it to move and accelerate. If it does not have the required force to move, then there will be no motion in the car and therefore no acceleration, it will stay at rest. The formula to calculate force is F=ma. The product of the mass and acceleration of the object is force. The mass and acceleration can also be

The mechanical, gravitational potential and kinetic energies (measured and average) showed trends with the masses of the balls. The big ball (larger mass) possessed more mechanical, gravitational potential and kinetic energy than the small ball (see summary table above) whereas the ball with the smaller mass possessed less energy correspondingly (3.9976 > 0.4588, 1.2242 > 0.0428, 6.1853 > 1.2242). This trend was consistent throughout all of the recorded results. This can be justified by the equations of mechanical, gravitational potential and kinetic energy which all include mass meaning a larger mass constitutes to more energy (see Background Information).