Understanding the Forces

* Gravity: The primary force acting on the package is gravity. This force pulls the package downwards.

* Air Resistance: We'll assume for simplicity that air resistance is negligible in this scenario.

Calculating the Force

* Newton's Second Law: The relationship between force, mass, and acceleration is described by Newton's Second Law:

* Force (F) = Mass (m) * Acceleration (a)

* Acceleration due to Gravity: The acceleration due to gravity (g) on Earth is approximately 9.8 m/s².

Calculation:

1. Force = Mass x Acceleration

2. Force = 4.0 kg * 9.8 m/s²

3. Force = 39.2 N

Therefore, the force acting on the package of nails is approximately 39.2 Newtons.