Year 9 NSW » Science » Force and motion » Force and gravity

Topic : Force and gravity

In this topic you will learn...

Chapter 1 : Early thoughts

Our thoughts about mechanics have changed over the centuries
Greek philosophers believed that objects were only in motion if a constant force was applied
In the 6th century, John Philoponus suggested that objects gained impetus when in motion
Galileo studied the motion of objects and discovered their acceleration due to gravity was the same
Galileo also discovered that objects tend to stay at the same velocity unless acted upon by another force
Newton's Laws of Motion were highly influential to modern physics

Chapter 2 : Newton's First Law: inertia

Chapter 3 : Newton's Second Law: F = ma

Chapter 4 : Newton's Third Law: action and reaction

Chapter 5 : Mass, weight and gravity

Chapter 6 : Friction

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