Final answer:
The position vs time graph of an accelerating object is curved, not straight. Displacement vs time for constant acceleration is curved, while displacement vs time squared is straight. The market revolution led to major social and economic transformations in the US.
Step-by-step explanation:
The main answer for question 18 is b. False. The position vs time graph of an object that is speeding up is not a straight line. Instead, it is a curved line because the slope of the line (representing velocity) is changing—it's increasing as time passes if the object is accelerating. Acceleration means a change in velocity over time, and a straight line would indicate constant velocity, not acceleration.For question 31, the main answer is a. True. The displacement versus time for an object moving with constant acceleration is indeed a curved line because the displacement is not increasing at a constant rate, but rather it is increasing by an increasing amount as time passes due to the constant acceleration. On the other hand, when plotting displacement versus time squared for an object under constant acceleration, the resulting graph is a straight line, reflecting the direct proportionality between displacement and the square of time in such situations.The main answer to the exercise 11.3.1 is a. True. The market revolution, which occurred in the United States during the early 19th century, brought about significant social and economic changes including increased industrialization, the expansion of markets, and changes in the transportation and production methods.In the context given by 'b', a decreasing line (Line A) represents a negative relationship, while an increasing steeper line (Line B) suggests a stronger positive relationship between the plotted variables. The steepness of Line B indicates a rapid change in the dependent variable with respect to the independent variable.