Understanding the Concepts

* Work: Work is done when a force causes an object to move a certain distance. It's calculated by: Work (W) = Force (F) x Distance (d)

* Force: Force is a push or pull that can change an object's motion.

Solving the Problem

1. We know:

* Work (W) = 160 J

* Distance (d) = 8 m

2. We need to find:

* Force (F)

3. Using the work formula:

* W = F * d

* 160 J = F * 8 m

4. Solving for Force:

* F = 160 J / 8 m

* F = 20 N (Newtons)

Answer: The force needed to do this job is 20 Newtons.