Kaplan Nursing Entrance Practice Exam

What are Newton's Three Laws of Motion?

1. Law of conservation, Law of inertia, and Action equals reaction

2. Law of action and reaction, Law of inertia, and Force equals mass time acceleration

3. Force equals mass times velocity, Law of inertia, and Gravity

4. Law of action, Law of decay, and Inertia

The correct answer is: Law of action and reaction, Law of inertia, and Force equals mass time acceleration

Newton's Three Laws of Motion focus on the relationship between the motion of an object and the forces acting on it. The first law, often referred to as the Law of Inertia, states that an object at rest will remain at rest, and an object in motion will continue in motion at a constant velocity unless acted upon by a net external force. This principle underscores the natural resistance of objects to changes in their state of motion. The second law articulates that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass, mathematically expressed as Force equals mass times acceleration. This law quantifies the effect of force on an object’s motion, illustrating how larger forces result in greater accelerations. The third law states that for every action, there is an equal and opposite reaction. This means that whenever one object exerts a force on another object, the second object exerts a force of equal magnitude in the opposite direction back on the first object. These laws collectively explain the fundamental principles governing the dynamics of motion and interactions in mechanics, making choice B the correct representation of Newton's Three Laws of Motion.