Two cars travel on the parallel lanes of a two-lane road. The cars’ motions are represented by the position versus time graph shown in the figure. Answer the questions using the times from the graph indicated by letters.
PART A. At which of the times do the two cars pass each other?
Two objects can pass each other only if they have the same position at the same time.
PART B. Are the two cars traveling in the same direction when they pass each other?
PART C. At which of the lettered times, if any, does car #1 momentarily stop?
The slope on a position versus time graph is the “rise” (change in position) over the “run” (change in time). In physics, the ratio of change in position over change in time is defined as the velocity. Thus, the slope on a position versus time graph is the velocity of the object being graphed.
PART D. At which of the lettered times, if any, does car #2 momentarily stop?
PART E. At which of the lettered times are the cars moving with nearly identical velocity?