Sir Isaac Newton was one of the greatest influential scientists of all time. br He formulated the Three Laws Of Motion. br 1st Law Of Motion:- An object will continue to remain at rest or uniform motion unless acted upon by an external unbalanced force br 2nd Law of Motion:- The rate of change of momentum of a body is directly proportional to the force applied, and this change in momentum takes place in the direction of the applied force. br 3rd Law of Motion:- When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.