(Solved): A motorcycle's position is shown in the graph. What is its speed at \( t=50 \mathrm{~s} \) ? \[ \b ...

A motorcycle's position is shown in the graph. What is its speed at \( t=50 \mathrm{~s} \) ? \[ \begin{array}{l} 7.00 \mathrm{~m} / \mathrm{s} \\ 0 \mathrm{~m} / \mathrm{s} \\ 0.0714 \mathrm{~m} / \mathrm{s} \\ 14.0 \mathrm{~m} / \mathrm{s} \end{array} \] Question 2 The position of a dog is given by the function \( x=1.50 t^{2}-5.00 t+6.50 \), where \( t \) is in seconds. What is the acceleration of the dog at \( t=5.15 \mathrm{~s} \) ? \[ \begin{array}{l} 15.4 \mathrm{~m} / \mathrm{s}^{2} \\ 20.5 \mathrm{~m} / \mathrm{s}^{2} \\ 3.00 \mathrm{~m} / \mathrm{s}^{2} \\ 10.5 \mathrm{~m} / \mathrm{s}^{2} \end{array} \]