What is the formula for finding force ?

Hint: A force is a push or pull on an object caused by the contact of the object with another object. The two subjects no longer feel the energy as the contract ends.Interaction is the only way for forces to exist.

Complete answer:
A force is an effort that alters the state of an entity, whether it is at rest or moving. Any time two things meet, a force is exerted on each of them. The SI unit of force is in Newtons. The formula used to calculate the amount of force is given by Newton’s second law of motion.

Newton’s second law of motion states that the rate at which a body's momentum changes over time is proportional to the force applied and takes place in the same direction as the force. When the mass of the object is kept constant, the above law tells us that the force is equal to the mass of the object times the acceleration of the object. Thus, the force applied on an object is given by the formula:
 $F = m \times a$
Where, $m$ is the mass of the object and $a$ is the acceleration of the object.

Note: The line of action of the force is the path along which a force acts on an entity.The point of application of the force is the location where the force acts on an object.Force is said to be a vector quantity. A vector quantity is one that has both magnitude and direction.