The graphs below depict different cars moving on a straight road. Which graph shows a car moving with constant speed? (1 point) Responses A A B B C
Graph A shows a car moving with constant speed.
To determine which graph shows a car moving with constant speed, let's analyze each graph:
- Graph A: The car starts with an initial velocity and gradually increases its speed over time. Therefore, this graph does not represent constant speed.
- Graph B: The car maintains a constant velocity throughout the entire duration. Thus, this graph represents constant speed.
- Graph C: The car starts with an initial velocity and its speed decreases over time. Therefore, this graph does not represent constant speed.
Based on this analysis, Graph B represents a car moving with constant speed.
To determine which graph shows a car moving with constant speed, we need to understand how speed is represented in a distance-time graph.
In a distance-time graph, the vertical axis represents the distance traveled, while the horizontal axis represents time. A constant speed is indicated by a straight line with a constant slope.
Let's analyze the given options:
Graph A:
- The graph shows a straight line with a constant slope. This indicates that the car is moving at a constant speed since its distance is increasing at a consistent rate.
Graph B:
- The graph shows a curved line. This implies that the car's speed is changing since the slope is not constant. Therefore, graph B does not depict a car moving with a constant speed.
Graph C:
- The graph shows a horizontal line, which means the distance traveled remains the same over time. This indicates that the car is not moving at all, as there is no progress in distance. Hence, graph C does not represent a car moving with constant speed.
Based on the analysis, we can conclude that graph A shows a car moving with constant speed.