You are working as a forensic physicist, analyzing a collision for the state police. According to witnesses, a car heading east and a truck heading south collided in an intersection. Photographs taken at the scene show that the car was severely damaged. Which of the following apply to this situation?

a.|p|car, initial+|p|truck, initial=|p|car, final+|p|truck, final

b. pcar, x, initial+pcar, x, final=ptruck, x, initial+ptruck, x, final

c. pcar, y, initial+ptruck, y, initial=pcar, y, final+ptruck, y, final

d. Ecar, initial+Etruck, initial=Ecar, final+Etruck, final

e. pcar, x, initial+ptruck, x, initial=pcar, x, final+ptruck, x, final

Please explain your reasoning in making the choices you did.