a force does work on an object when it causes a __________ of the object. what word completes the sentence?

A force does work on an object when it causes a displacement of the object.

Why "Displacement"?

In physics, work requires both force and motion in the direction of that force. Displacement is the key change in position; without it, no work occurs—even if force is applied. For example, pushing a wall does nothing since there's no movement.

The formula confirms this: W=Fdcos⁡θW=Fd\cos \theta W=Fdcosθ, where ddd is displacement.

Quick Examples

• Lifting a book: Force upward causes upward displacement → work done.

• Pulling a wagon: Horizontal force matches horizontal movement → work done.

• Holding a heavy bag still: Force applied, but no displacement → no work.

Common Misconceptions

• Every force does work? No—perpendicular forces (like gravity on horizontal motion) yield zero work since cos⁡90∘=0\cos 90^\circ =0cos90∘=0.

• Everyday vs. physics "work": In daily talk, "work" means effort; physics demands displacement.

TL;DR: The word is displacement.

Information gathered from public forums or data available on the internet and portrayed here.