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. Mathematically, this is expressed as:

* F = m * a

* Where:

* F = Force (in Newtons)

* m = Mass (in kilograms)

* a = Acceleration (in meters per second squared)

Calculation

1. Identify the knowns:

* Force (F) = 15 N

* Mass (m) = 3 kg

2. Rearrange the formula to solve for acceleration (a):

* a = F / m

3. Substitute the values and calculate:

* a = 15 N / 3 kg

* a = 5 m/s²

Answer: The acceleration of the 3 kg ball is 5 m/s².