2.5 Exercise 4

A well-thrown ball is caught in a well-padded mitt. If the deceleration of the ball is $2 . \text{10} \times \text{10}^{4} \text{ m}/\text{s}^{2}$, and 1.85 ms $\left(\text{1 ms} = \text{10}^{- 3} \text{ s}\right)$ elapses from the time the ball first touches the mitt until it stops, what was the initial velocity of the ball?