Question

1 during which time interval does velocity change
a 8 - 10 seconds
b 2 - 4 seconds
c 0 - 2 seconds
d 4 - 5 seconds

Explanation:

Step1: Analyze velocity - time graph properties

In a velocity - time graph, a non - zero slope indicates a change in velocity. A zero slope (horizontal line) means constant velocity.

Step2: Check each time interval

• For \(8 - 10\) seconds: The graph is a straight line with a non - zero slope (negative slope as velocity is decreasing).
• For \(2 - 4\) seconds: The graph is a horizontal line (slope \(m = 0\)), so velocity is constant.
• For \(0 - 2\) seconds: The graph is a straight line with a non - zero slope (positive slope as velocity is increasing).
• For \(4 - 5\) seconds: The graph is a horizontal line (slope \(m=0\)), so velocity is constant.

Answer:

A. \(8 - 10\) seconds, C. \(0 - 2\) seconds