Velocity-time graph gradient
A velocity-time graph for a robot cart investigation is a straight line from \(3\,\text{m s}^{-1}\) at \(t=0\) to \(12\,\text{m s}^{-1}\) at \(t=4\,\text{s}\). Calculate the acceleration. Explain why the selected relationship is suitable before entering the value. Enter the numerical result and choose the interpretation that matches the physics meaning.
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