Force is a physical quantity that describes the interaction between two objects. It can cause an object to accelerate, decelerate, or change direction.
Motion is the change in position of an object over time. It can be described by its speed, direction, and acceleration.
Newton's first law of motion, also known as the law of inertia, states that an object will remain at rest or in a state of constant velocity unless acted upon by an external force.
Weight is a measure of the force of gravity acting on an object, while mass is a measure of the amount of matter an object contains.
Forces can cause an object to change its speed, direction, or shape. They can also cause an object to come to a stop or start moving. The net force acting on an object determines its acceleration, or change in motion.