Final answer:
The position vs time graph of an object that is speeding up is not a straight line.
Step-by-step explanation:
The answer is b. False.
An object that is speeding up will have a curved position vs time graph, not a straight line. This is because as the object accelerates, its displacement will increase at an increasing rate, resulting in a curved graph.
For example, if you plot the position vs time graph of a car accelerating from rest, the graph will start with a small slope and gradually become steeper as time goes on, forming a curved line.