Question

Determine the displacement of the object between 0 and 9 seconds

Answer 1

The displacement of the object can be calculated by calculating the area under the curve as,

$\begin{gathered} d=\frac{1}{2}(9-0)(6-(-12)) \\ =\frac{1}{2}(9)(18) \\ =81\text{ m} \end{gathered}$

Thus, the displacement of the object is 81 m.