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__Group memebers:__ Anne Edwards and Eva Tumanova

__Goal:__ Prove if the Physics in the following movie clip accurate/possible. [] (2:55) __Proceedure:__ 1. determine the velocity of the cars in the video, and approximate masses (Chevy and GT Mustang) 2. We used equations from the momentum and conservation of energy units to determine that the collision in the movie is improbable. 3.model the scenario using carts and a ramp. 4. relating modeled cart collision to the situation in the video. __Data:__

The following table consists of information we found about cars similar to those in the Knightrider video: The following equations are ones we used throughout the entire experiment: 1) Pf+Pc=Pf'+Pc' 2)mvf+mvc=mvf'+mvc'
 * Variables || Ford (GT mustang) || Chevy (Tahoe) ||
 * mass || 1611.16 kg || 2189.944 kg ||
 * Initial velocity || 0 m/s || 80 m/s ||

In the three latter examples we will prove to you why the video shown is not possible. __Example 1:__ (refer to data table above) In this example, we used the momentum equation. In this sittuation, the momentum of both cars before the collision should be equal to the sum of the the two cars' momentums after the collision. However, this is not the case; 1611.16(0) + 2189.944(80) = 0 + 2184.944(0) 175196 = 0 (this is not possible. 175196 must be equal to itself for the reaction to be present)

__Example 2__: (refer to data table above) In this example we altered the velocity of the Chevrolet to see if the outcome would also prove to be impossible (like example 1). Isolating all of the other variables, we wanted to see if the Chevy, when traveling at a lower speed, would push the ford. To prove that even if traveling at a slower velocity, the Chevy would still push the Mustang from its stationary position. We used the same momentum equation as from the prior example. 1611.16(0) + 2189.9446(60) = 1611.16(0) + 2189.9446(0) 131397 = 0 (This is also not possible because the momentum before does not equal the momentum after)

__Example 3:__ (refer to data table above) In this example we decided to change the mass of the chevy from 1611.16 kg to 1500 kg to see if our results would be inconclusive like the prior examples. 1611.16(0) + 1500(80) = 1611.16(0) + 1500(0) 120000 = 0 (even changing the mass does not change the result of the collision and, in this case, the momentum before the collision still does not equal the momentum after the collision).

__Example 4:__ After proving why the movie exerpt was not conceptually possible, we decided to model the situation using carts. The masses of the cars and the initial velocity of the car colliding with the stationary car are different than those of the cars in the video, but this is just a representation of what should have happened. The graph below illustates our modeled collision:



__What we learned:__ In conclusion, the video exerpt from the movie //Knightrider// is physically impossible. When the Chevy crashed into the Ford Mustang, instead of staying stationary, the mustang should have traveled with a non-zero velocity. Examples 1-3 prove that even by changing the speed or the mass of the Chevy the overall result was the same; The momentum before did not equal the momentum after. The chart from example 4 is one of our modeled collision. Clearly, the velocity after the collision (the collision occured a 0:90 seconds) is not zero. Since this is just a representation and the masses of the carts and initial velocity of the car colliding with the stationary car are smaller than in a full-scale collision, the results of a real car collision would be greater. By this we mean that the velocity of the Mustang after the collision should not have remained zero, and because of the velocity not remaining zero, the stopping distance after the collision should have been greater than zero. In our modeled collision, the cart with which the "Chevy" collided moved at 1.141 m/s after the collision. The "mustang" had a non-zero stopping distance, and in a real situation it would be even greater than in this model because the force of the collision would be greater due to greater masses and velocities. Throughout our experiment we proved the Knightrider video false and provided reasoning. We've learned how to see a physical representation of the momentum equation and how to prove the equation and Newton's law of Conservation of Energy.