Final answer:
The question involves a physics concept, specifically the conservation of momentum to calculate the velocity of wreckage after a traffic collision.
Step-by-step explanation:
The correct answer is option C, which includes the physics calculation of a traffic collision to determine the velocity of the combined wreckage. In this case, to find the resultant velocity of the car and truck wreckage, we use the conservation of momentum, since no external forces are acting on the system.
In physics, momentum (p) is calculated as the product of mass (m) and velocity (v), which means p = m × v. The total momentum of the system before the collision should equal the total momentum of the system after the collision.
For the car traveling east (m1 = 1200 kg, v1 = 60 km/hr) and the truck traveling north (m2 = 3000 kg, v2 = 40 km/hr), we calculate the momentum in each direction. Then, to find the combined velocity, we use vector addition to add the momentums, and the magnitude and direction can be found using trigonometric functions to solve for the resultant vector.
This process is a fundamental principle of conservation of momentum, which plays a crucial role in understanding real-world collisions in physics.
The correct answer is option Physics. The question is asking about the maximum weight allowed for a combination of vehicles other than a truck-tractor combination. This question is related to the topic of vehicle limitations and regulations in the field of Physics.