Question

interpret what does the shape of each line indicate about the objects speed?

Explanation:

Step1: Analyze straight - line graph

In a distance - time graph, for a straight line, the slope is constant. Since speed is the slope of a distance - time graph, a straight line indicates a constant speed.

Step2: Analyze curved - line graph

For a curved line in a distance - time graph, the slope is changing. As the slope represents speed, a changing slope means the speed is changing. If the curve is getting steeper, the speed is increasing.

Answer:

The straight line indicates a constant speed. The curved line indicates a changing speed (in this case, the speed is increasing as the curve gets steeper).