Physics definition of work done

Steps:

• Recall work done is force applied over displacement in the force's direction.
• Identify unit as newton-meter (Nm), equivalent to joule (J).
• Compare options to standard formula W = F × d × cosθ (simplified to F × d when parallel).
• Select option matching both definition and unit.

Why C is correct:

• Matches definition W = force × distance moved in direction of force; unit Nm is joule per physics convention.

Why the others are wrong:

• A: Describes power (energy/time), unit J is for energy/work, not time-based.
• B: Vague phrasing suggests force over time (impulse-like), unit Nm correct but definition incomplete/wrong.
• D: Lacks force multiplication, unit N/m is force per length (e.g., tension), not work.

Final answer: C