distance vs time which line represents an obj...
distance vs time which line represents an object that is moving at a constant speed? the object represented by line b (blue). the object represented by line a (red). both lines have the same speed because both move for 10 seconds.
Answer
# Explanation:
## Step1: Recall speed - distance - time relation
Speed $v=\frac{d}{t}$, where $d$ is distance and $t$ is time. On a distance - time graph, the speed is the slope of the line. A constant - speed motion is represented by a straight - line graph.
## Step2: Analyze Line A
Line A is a curved line. The slope of a curved line changes over time, which means the speed of the object represented by Line A is changing.
## Step3: Analyze Line B
Line B is a straight line. For a straight - line on a distance - time graph, the slope is constant. So the object represented by Line B is moving at a constant speed.
# Answer:
The object represented by line B (blue).