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:

* F = m * a

* F = Force (in Newtons)

* m = Mass (in kilograms)

* a = Acceleration (in meters per second squared)

Calculation

1. Identify the given values:

* Mass (m) = 2000 kg

* Force (F) = 400 N

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

* a = F / m

3. Substitute the values and calculate:

* a = 400 N / 2000 kg

* a = 0.2 m/s²

Answer: The rate of acceleration of the 2000-kilogram truck is 0.2 meters per second squared.