What is defined as a pushing or pulling interaction of objects?

The correct answer is a fundamental concept in physics known as force. Force is defined as an interaction that causes an object to experience a change in speed, direction, or shape. It can be a push, pulling, or any other interaction that alters the state of motion of one or more objects.

Understanding force is essential in engineering and physics, as it lays the groundwork for analyzing structures, machinery, and systems in motion. Forces can result from various sources, such as gravitational attraction, friction, tension, or applied pressure. In practical applications, engineers must consider the forces acting on objects to ensure they perform safely and effectively under different conditions, making it a critical topic in the study of mechanics within Principles of Engineering.

In contrast, momentum refers to the quantity of motion an object has and is dependent on its mass and velocity. Work involves the transfer of energy when a force is applied over a distance, while energy itself is the capacity to do work or produce change. Though related, these concepts do not precisely describe the interaction of pushing or pulling, making force the specific term that correctly answers the question.