Question

based on the graph, during what time period is the race horse moving at the fastest speed? a 0 to 1 second b 0 to 4 seconds c 2 to 4 seconds d 4 to 6 seconds

Explanation:

Step1: Recall speed - distance graph concept

Speed is the slope of the distance - time graph. Steeper the slope, higher the speed.

Step2: Analyze slopes in different intervals

In the interval 0 - 1 second, the slope is relatively small. From 0 - 4 seconds, the slope increases gradually but is not the steepest. In 2 - 4 seconds, the slope is less steep compared to 4 - 6 seconds. In the interval 4 - 6 seconds, the graph has the steepest slope.

Answer:

D. 4 to 6 seconds