Let's analyze and answer the two questions based on the graphs provided in the image.

Question 1:

Which graph represents a car that is decreasing in speed?

Analysis:

• A car decreasing in speed implies its velocity (speed) is reducing over time. This is represented by a graph where the slope of the speed vs. time graph decreases, i.e., it shows a downward slope.
• Looking at the graphs:
  • Graph A shows speed decreasing over time.
  • The others (Graphs B, C, and D) do not show this behavior.

Answer: A. Graph A

Question 2:

Which graph represents a car that is not moving?

Analysis:

• A car not moving means its position or distance does not change with time, which implies a flat, horizontal line on the distance vs. time graph.
• Looking at the graphs:
  • Graph B shows a horizontal line in the distance vs. time graph, indicating no movement.
  • The others (Graphs A, C, and D) show changes in speed or distance over time.

Answer: B. Graph B

Let me know if you'd like detailed explanations for these answers or have further questions!

Here are 5 questions to expand your understanding:

1. How do you identify whether a car is accelerating or decelerating from a speed vs. time graph?
2. What would a graph look like for a car moving at a constant speed?
3. Can a car have a constant speed but a varying distance vs. time graph? Why or why not?
4. How would you represent a car accelerating uniformly on both a speed vs. time graph and a distance vs. time graph?
5. Why is it important to understand the relationships between speed, distance, and time in graph interpretation?

Tip: Always check the axes and their labels to understand what type of data the graph represents!