Final answer:
The subject of this question is Physics. Large trucks (tractor trailers) have serious Physics considerations, such as fuel economy and cargo capacity. The bouncing of a trailer on a highway can also indicate its load.
Step-by-step explanation:
The subject of this question is Physics. Large trucks (tractor trailers) have serious Physics considerations.
One consideration is the fuel economy of trucks. Typical big rigs achieve a fuel economy of around 6 miles per gallon (40 L/100 km) of fuel, while the most aerodynamic ones achieve 8 mpg (30 L/100 km). Another consideration is the cargo capacity, which is about 20 tons. Both of these factors come into play when discussing the design and operation of large trucks.
Additionally, the bouncing of a trailer on a highway can provide insights into its load. If the trailer is bouncing up and down slowly, it is more likely to be heavily loaded rather than nearly empty.