Answer:
8 cm/s
Explanation:
When the time is 0 s (x₁ = 0 s), the position of the rolling ball is 0 cm (y₁ = 0 cm).
When the time is 6 s (x₂ = 6 s), the position of the rolling ball is 45 cm (y₂ = 45 cm).
Using these 2 points, we can find the slope (m) of the secant line.
m = (y₂ - y₁)/(x₂ - x₁) = (45 cm - 0 cm)/(6 s - 0 s) = 8 cm/s (we round off to 1 significant figure)
