1. The problem statement, all variables and given/known data During the head on collision of a 1500kg car moving 20 m/s and a 2400 kg truck moving 12.5 m/s does the car move farther than, a shorter distance than, the same distance as the truck, or is this indeterminate with the given information. 2. Relevant equations m1(v1)+m2(v2)=(m1+v1)vf=0 average acceleration of car = 20/t average acceleration of truck = 12.5/t 3. The attempt at a solution the final velocity of both cars is 0 m/s. So if the duration of the collision is .5 seconds, then the average acceleration of the car is 40 m/s^2 and the truck is 24 m/s^2. the area under the graph -40x+20 (the velocity of the car) is 5 m. the area under the graph -24x+12.5 (velocity of truck) is 3.25 m. So this would mean the car travels a greater distance. My gut says that the car moves the same distance as the truck but that is not an adequate explanation for my professor. How do I calculate this??