Force is a physical quantity that describes the interaction between two objects. It is the push or pull that causes an object to move, accelerate, or change direction.
Force is measured in units called newtons (N). One newton is equal to the force required to accelerate a mass of one kilogram at a rate of one meter per second squared.
The amount of force needed depends on the mass of the object, the acceleration of the object, and the direction of the force.
The amount of force needed can be calculated using the formula F=ma, where F is the force, m is the mass, and a is the acceleration. This is known as Newton's Second Law of Motion.
Yes, force can be negative. Negative force indicates a force in the opposite direction, such as when an object is slowing down or moving in the opposite direction of the applied force.