Final answer:
Cars are increasingly fuel-efficient, a position vs time graph for accelerating objects is not straight, solar sail craft can be propelled by solar wind, simple machines have less than 100% efficiency due to friction, and the market revolution significantly changed the U.S. socially and economically.
Step-by-step explanation:
When assessing fuel efficiency and the various factors that might impact it, it's recognized that cars are becoming more fuel efficient, therefore achieving more miles per gallon. Regarding the other given statements, a particularly cold winter or events such as oil discoveries, economic slowdowns, conflicts affecting oil-pumping, or improvements in building insulation can influence overall energy consumption, including the demand for fuel. In physics, when examining motion, the position vs time graph of an object that is speeding up would not be a straight line but rather a curve, illustrating acceleration, hence the statement is false. Additionally, the concept of a solar sail craft being propelled by the solar wind particles is theoretically true, and when considering the efficiency of simple machines, it is always less than 100 percent due to energy loss from friction, making that statement true as well.
Discussing the market revolution, it can be affirmed that it indeed brought significant social and economic changes to the United States, so that statement is true.