What is the definition of work in physics?

In physics, work is defined as the product of the force applied to an object and the distance over which that force is applied, specifically in the direction of the force. This definition stems from the formula for work, which is given as ( W = F \cdot d \cdot \cos(\theta) ), where ( W ) is work, ( F ) is the force applied, ( d ) is the distance moved, and ( \theta ) is the angle between the force and the direction of motion.

When force is applied in the same direction as the motion, the angle is zero degrees, and so the cosine of zero degrees is one. Thus, work can be simplified to the product of force and distance moved in that direction. This concept is fundamental in understanding how energy is transferred when an object moves under the influence of a force.

The other options provided do not accurately capture the complete definition of work in a physical context. While the second choice mentions energy in relation to lifting an object, it does not encompass the broader definition applicable to any situation involving force and displacement. The third choice erroneously connects force with velocity without the consideration of distance, and the fourth choice refers to energy transfer but focuses solely