Lesson Notes By Weeks and Term v5 - Grade 12

Lesson Video

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Performance objectives

• Apply Newton's Laws to solve problems.
• Solve problems in vertical projectile motion.
• Apply IUPAC nomenclature rules for organic compounds.
• Explain physical properties using intermolecular forces.
• Identify key organic reaction types.

Lesson summary

This week focuses on consolidating your understanding of key Physical Sciences topics typically covered in the first term of Grade

1

2. Effective revision is crucial for exam success. We'll be revisiting Newtonian Mechanics (specifically Newton's Laws and Vertical Projectile Motion) and Organic Chemistry (specifically nomenclature, properties, and reactions of alkanes, alkenes, alkynes, alcohols, carboxylic acids, esters, haloalkanes, aldehydes, and ketones). These topics are not only fundamental to further studies in science and engineering but also have practical applications in understanding everyday phenomena and industrial processes.

Lesson notes

2.1 Newtonian Mechanics: Newton's Laws and Vertical Projectile Motion Newton's First Law (Law of Inertia): An object will remain at rest or continue moving at a constant velocity unless acted upon by a net force. This means an object resists changes in its state of motion.

Newton's Second Law: The net force acting on an object is equal to the rate of change of momentum or, more commonly expressed, the net force is equal to the mass of the object multiplied by its acceleration (Fnet = ma). This law forms the basis for analyzing the motion of objects. It's a vector equation, meaning direction matters.

Newton's Third Law: When object A exerts a force on object B, object B simultaneously exerts an equal and opposite force on object A. These forces act on different objects and are therefore called action-reaction pairs. For example, if you push a wall, the wall pushes back on you with an equal and opposite force.