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# Year 11 Physics

## Module 2 | Dynamics

### Content 2: Forces, acceleration and energy

#### Lesson 1 | Newton's first law

• apply Newton’s first two laws of motion to a variety of everyday situations, including both static and dynamic examples, and include the role played by friction ($friction = \mu \vec{F}_{N}$) (ACSPH063)

• NOTE – this lesson addresses Newton’s first law of motion only, the second law of motion is dealt with in the next video

#### Lesson 2 | Newton's second law

• investigate, describe and analyse the acceleration of a single object subjected to a constant net force and relate the motion of the object to Newton’s Second Law of Motion through the use of: (ACSPH062, ACSPH063)
– qualitative descriptions
– graphs and vectors
– deriving relationships from graphical representations including ($\vec{F} = m\vec{a}$) and relationships of uniformly accelerated motion

#### Lesson 3 | Work and energy

• apply the special case of conservation of mechanical energy to the quantitative analysis of motion involving:
– work done and change in the kinetic energy of an object undergoing accelerated rectilinear motion in one dimension ($W = \vec{F}_{net}\vec{S}$)
– changes in gravitational potential energy of an object in a uniform field ($\Delta U = m\vec{g}\Delta \vec{h}$)

#### Lesson 4 | Mechanical Energy, Work and Power

• conduct investigations over a range of mechanical processes to analyse qualitatively and quantitatively the concept of average power ($P = \frac{\Delta E}{t},\; P = \vec{F}\vec{v}$), including but not limited to:
– uniformly accelerated rectilinear motion
– objects raised against the force of gravity
– work done against air resistance, rolling resistance and friction