Which statement best describes work in physics and how it is calculated in a straight-line scenario?

Which statement best describes work in physics and how it is calculated in a straight-line scenario?

• A. Work is the product of force and distance moved in any direction; W = F × d.
• B. Work equals the change in kinetic energy, only when velocity changes; W = ΔK.
• C. Work is performed whenever a force is applied, regardless of displacement; W = F.
• D. Work is done when a force causes displacement in the direction of the force; W = F × d (in the direction of the force), with units Joules.

Answer: (D)