The strength of a force is measured in newtons (N). There are four fundamental forces in physics. A force is always a push, pull, or a twist, and it affects objects by pushing them up, pulling them down, pushing them to a side, or by changing their motion or shape in some other way. Force in physics is a push or pull that can change the motion, shape, or direction of an object. Learn types of forces and Newton’s laws. The meaning of FORCE is strength or energy exerted or brought to bear : cause of motion or change : active power. How to use force in a sentence. Synonym Discussion of Force. Force, in mechanics, any action that tends to maintain or alter the motion of a body or to distort it. The concept of force is commonly explained in terms of Isaac Newton’s three laws of motion. Because force has both magnitude and direction, it is a vector quantity. The force on an object equals the object’s mass multiplied by its acceleration. When one object exerts a force on another object, the second object exerts an equal and opposite force on the first. Force is a fundamental concept in Physics, driving changes in motion, direction, or shape of objects. Understanding the definition of force, its types, formulas, and real-world applications reveals its crucial role in natural phenomena and technology. In physics, a force is an action that can cause an object to change its velocity or its shape, or to resist other forces, or to cause changes of pressure in a fluid. In mechanics, force makes ideas like pushing or pulling mathematically precise. 1. In full strength; in large numbers: Demonstrators were out in force. 2. In effect; operative: a rule that is no longer in force. Instantly play the most demanding PC games and seamlessly play across your devices. FORCE definition: 1. physical, especially violent, strength or power: 2. in large numbers: 3. a physical influence…. Learn more.