For a driver travelling to the west and stops at the sign, the slope must be negative.
The curve also needs to start at positive x-axis and then becomes zero at point x = 0, implying that the driver is traveling towards the west and has stopped at the stop sign.
The motions described in each of the questions take place at an intersection on a two-lane road with a stop sign in each direction. For each motion, select the correct position versus time graph. For all of the motions, the stop sign is at the position x = 0, and east is the positive x-direction. (Figure 1)
Part A. A driver, traveling west, slows and stops at the stop sign.
Part B. A driver, after stopping at the stop sign, accelerates to the east.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Position-Time Graphs & Velocity concept. You can view video lessons to learn Position-Time Graphs & Velocity. Or if you need more Position-Time Graphs & Velocity practice, you can also practice Position-Time Graphs & Velocity practice problems.