Question

which section of the graph shows the time when the motorcyclist is stationary at lights?

Explanation:

Step1: Analyze the speed - time graph

In a speed - time graph, when an object is stationary, its speed is \(0\).

Step2: Check each section

• Section \(A\): The speed is constant (non - zero), so the motorcyclist is moving at a constant speed.
• Section \(B\): The speed is decreasing, but it is still non - zero for most of the section (until it reaches zero at the end of \(B\)).
• Section \(C\): The speed is \(0\) throughout this section. So, the motorcyclist is stationary here.
• Section \(D\): The speed is increasing from \(0\).

Answer:

C.