Understanding the Concepts

* Newton's Second Law of Motion: 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. The equation is: *F* = *m* *a*

* *F* = net force (in Newtons, N)

* *m* = mass (in kilograms, kg)

* *a* = acceleration (in meters per second squared, m/s²)

Calculations

1. Identify the knowns:

* *m* = 70 kg (mass of the swimmer)

* *F* = 250 N (force applied)

2. Solve for acceleration (*a*) using Newton's Second Law:

* *a* = *F* / *m*

* *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 m/s².