Question

1. choose the best answers using the distance - time graphs. which color line on the graph shows an object with the fastest constant speed? purple orange blue

Explanation:

Step1: Recall speed - distance - time relation

Speed is given by the slope of the distance - time graph ($s=\frac{\Delta d}{\Delta t}$). A steeper slope indicates a higher speed for a constant - speed motion.

Step2: Compare slopes of lines

By observing the graph, the purple line has the steepest slope among the three lines (purple, orange, blue).

Answer:

A. purple