Question

how many times does this object stop moving?
options: once, none, three times, twice

Explanation:

Step1: Identify stop condition

An object stops when its speed (slope of distance-time graph) is 0, meaning the graph is horizontal.

Step2: Count horizontal segments

Examine the graph:

1. First horizontal segment (flat line)
2. Second horizontal segment (flat line)

These are the only times the slope is 0.

Answer:

Twice