Newton first law of motion according to Newton first law of motion a body continues to be in state of rest or in a state of motion until unless some external unbalance force is appliedaccording to Newton\’s second law of motion the law of change of Linear Momentum of a body is directly proportional to force and this change always take place in the direction of the force. F=maaccording to Newton\’s third law of motion every force has equal and opposite reaction that is force of action and reaction are always equal and never cancel each other and this force act on two different bodies.Fab=-fbaforce applied on a to b is equal to minus force applied on b2a