Newtons Laws Of Motion

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Discipline:
Science
Subject:
Scientific Biographies
8   Sir Issac Newton

1st LAW

2nd LAW

3rd LAW

The focus of Lesson 1 is Newton's first law of motion - sometimes referred to as the law of inertia. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.

Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.

Websites

http://teachertech.rice.edu/Participants/louviere/Newton/law1.html

http://csep10.phys.utk.edu/astr161/lect/history/newton3laws.html