Space, time, and motion

Kinematics (A1)

Forces and momentum (A2)

Work, energy, and power (A3)

Gravitational fields and circular motion (D1 & A2)

Simple harmonic motion (C1)

TOK questions associated with this unit:

• What else is relative? Where did the concept of relative motion come into physics?

• Is there such a thing as constant acceleration? Why study it if it is so rare?

• What is the difference between a law and a rule?

• Newton's law is called "The Universal law" which means it applies to the Universe, this is a bold claim. Can we really claim to know that this law applies to every body in the universe?

• Use of language: weightless sounds like it means something with no weight but to have no weight you would have to be outside the field. Many people think that there is no gravity outside the atmosphere but this is of course not the case.

• Centripetal force is another example of perception vs physical reality. Ones feeling when you go round a corner in a car is that you are being pushed outwards however physics says the force is inwards.