1. Understand the Concepts

* Newton's Second Law: This law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Mathematically, this is represented as: F = ma, where:

* F = Force (Newtons)

* m = Mass (kilograms)

* a = Acceleration (meters per second squared)

2. Apply the Formula

We know the following:

* Force (F) = 250 N

* Mass (m) = 70 kg

We need to find the acceleration (a). Rearranging Newton's Second Law to solve for acceleration, we get:

a = F / m

3. Calculate the Acceleration

Substitute the values into the equation:

a = 250 N / 70 kg

a ≈ 3.57 m/s²

Answer: The swimmer will accelerate away from the wall at a rate of approximately 3.57 meters per second squared.