"when striking, the pike, a predatory fish, can accelerate from rest to a speed of 4.0 m/s in 0.11 s."
the question is " how far does the pike move during his strike" for part b
part a's answer is 36.36 repeating

In an uniform accelerated motion, the distance covered by the fish is given by:

where
a is the acceleration
t is the time

The acceleration is equal to the increase in speed of the fish divided by the time taken:

If substitute the acceleration into the first equation, we find the distance covered by the fish: