A baseball travelling horizontally at 41m/s [S] is hit by a baseball hat, causing its velocity to become 47m/s?

a = ΔV/Δt = (47-41)/1.9 = 3.2 m/sec

You have t - the time, u - the starting velocity and v - the final velocity and you are looking for a - the acceleration

The SUVAT equation that relates all of these is v = u + at (the simplest one).

We can rearrange this so that a = (v - u) / t and this tells us that the acceleration is simply the change in velocity divided by the time which makes sense.

The change in velocity is either 6 m/s or 88 m/s depending on whether your [S] and [N] indicates a south and north.

So the answer is either 6 / 1.9 or 88 / 1.9.

Assuming the latter the answer is 46.32 ms-2