Science - What is Force - English. Force. The original form of Newton's second law states that the net force acting upon an object is equal to the rate at which its momentum changes with time.
If the mass of the object is constant, this law implies that the acceleration of an object is directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of the object. As a formula, this is expressed as: where the arrows imply a vector quantity possessing both magnitude and direction.
Show Me Science - Gravity and Force. Forward-and-opposing-forces.