Julie carries an 8.0-kg suitcase as she walks 18 m along a horizontal walkway to her hotel room at a constant speed of 1.5 m/s. How much work does Julie do in carrying her suitcase?

Question

Quizplus · Accepted Answer

The work done is zero because the force Julie applies is vertical (to counteract gravity) and the displacement is horizontal, so the angle between the force and displacement is 90 degrees, resulting in no work done.

Julie Carries an 8