Question

How much I go about finding what I need for the equation?

Answer 1

18.3 m/s

Explanation:

The acceleration formula is as follows:

`a=(v_f-v_i)/(t)`

Since the final velocity is equal to 0, so we can solve for the initial velocity of the above, just like this:

`\begin{gathered} -6.42=(0-v_i)/(2.85) \\ -v_i=-6.42\cdot2.85 \\ v_i=18.3\text{ m/s} \end{gathered}`

The starting speed is 18.3 m/s