Question

comparing the motion of two cars
position vs time
for two cars
which statements describe the motion of car a and car
b? check all that apply.
□ car a and car b are both moving toward the origin.
□ car a and car b are moving in opposite directions.
□ car a is moving faster than car b.
□ car a and car b started at the same location.
□ car a and car b are moving toward each other until
they cross over.

Explanation:

Step1: Analyze the slope of the position - time graph

The slope of a position - time graph represents velocity. For a position - time graph, if the slope is negative, the object is moving towards the origin. Both lines (for car A and car B) have negative slopes, so car A and car B are both moving toward the origin.

Step2: Analyze the intersection of the two lines

The intersection of the two lines in a position - time graph means that the two cars are at the same position at the same time. Before the intersection, they are moving towards each other.

Answer:

Car A and car B are both moving toward the origin. Car A and car B are moving toward each other until they cross over.