3.1 Force, mass and acceleration
3.2 Identifying forces
3.3 Weight, friction and gravity
3.4 Mass and inertia
3.5 Moving through fluids
3.6 Newton's third law of motion
3.7 SI units
3 Dynamics: explaining motion
Exercise 3.1 Identifying forces
Exercise 3.2 How forces affect motion
Exercise 3.3 Force, mass and acceleration
Exercise 3.4 Terminal velocity
Exam-Style Questions