* Work is defined as the force applied multiplied by the distance moved in the direction of the force.
* If the force is vertical and the object moves horizontally, there is no displacement in the direction of the force.
* Since the displacement is zero, the work done is also zero.
Example:
Imagine pushing a box across a smooth floor. You exert a horizontal force to move the box. If you also push down on the box (a vertical force), that downward force doesn't contribute to the box's horizontal movement. It might increase friction, but it won't directly cause the box to move across the floor.
Key Point: Work is a scalar quantity, meaning it only has magnitude and not direction. It's important to consider the direction of both the force and the displacement when calculating work.
