Question

the graph below shows the motion of a car. which of the descriptions match the information graphed? a the driver traveled at a very high constant speed, maintained that speed for a few seconds before going back to the start just as quickly stopped again. she then increased her speed before maintaining a slow constant speed. b the driver accelerated quickly to merge into highway traffic. she was able to maintain her speed for a few seconds before having to brake to a stop. traffic started moving again and she was able to accelerate to a slow constant speed. c the driver had to go quickly up a steep hill, passed at the top and then descended back down the other side of the hill where she passed going up a slightly less steep hill and parking. d the driver pulled out of the parking lot, stopped for 2.5 seconds and then reversed back into the space and closed

Explanation:

Step1: Analyze the graph

The graph shows a car's motion over time. The vertical axis is speed and the horizontal axis is time.

Step2: Evaluate each option

• Option A: There is no indication of going back to the start.
• Option B: The graph has a period of high - speed (A - B), then stopping (B - C), then accelerating (C - D - E) and then maintaining a slow constant speed (E - F). This matches the graph.
• Option C: There is no indication of going up and down a hill.
• Option D: There is no indication of parking.

Answer:

B. The driver accelerated quickly to merge into highway traffic. She was able to maintain her speed for a few seconds before having to brake to a stop. Traffic started moving again and she was able to accelerate to a slow constant speed.