Question: What is the work done by a constant force on a rigid body moving in the direction of the force?

Options:

1. Force × Distance
2. Force × Distance × cos(θ)
3. Force × Distance × sin(θ)
4. Force / Distance

Correct Answer: Force × Distance × cos(θ)

Solution:

The work done is calculated as W = Fd cos(θ), where θ is the angle between the force and the direction of motion.