"Every body maintains its initial state of rest or motion with uniform speed on a straight line, unless an external force acts on it." The statement is-
The correct answer is Newton's first Law of Motion. ●"Every body maintains its initial state of rest or motion with uniform speed on a straight line unless an external force acts on it." is the statement of Newton's first law of motion ∘.Inertia occurs due to Newton's first law of motion. ∘Newton's first law of motion is also called the law of Galileo or the law of inertia. ∘Newton's first law of motion is the definition of force. ● "The rate of change of momentum of a body is directly proportional to the applied force" is the statement of Newton's second law of motion. ∘Newton's second law is the measure of force. ∘ F= ma is the mathematical expression of Newton's second law of motion. ■ F ⟶ Force ■ m ⟶ mass ■a ⟶ acceleration ● "For every action there is an equal and opposite reaction" is the statement of Newton's third law of motion. ∘ Practical applications of Newton's third law of motion are: ■ Rolling of gun when a bullet is fired off the gun. ■The flying motion of a bird. ■The propulsion of rockets.