Which section of Figure 9 shows the person walking the slowest? Give a reason for your answer.

On a distance-time graph, the gradient of the line is equal to the speed. - A steep gradient means a large distance is covered in a short time, so the speed is high. - A shallow gradient means a small distance is covered in a long time, so the speed is low. - A horizontal line (zero gradient) means the distance is not changing, so the object is stationary (speed is zero). By comparing the sections: - Section A is quite steep. - Section B is much less steep (shallower) than A and C. - Section C is the steepest. Therefore, the person was walking slowest in section B because it has the shallowest gradient.