What you'll learn
How forces affect motion.
Motion and forces
- Speed = distance ÷ time; acceleration; distance–time and velocity–time graphs.
- Newton's laws; F = ma; weight = mass × g.
- Resultant force, stopping distance and Hooke's law.
Exam tips
- Identify all forces before finding the resultant.
- Use F = ma with consistent units.
Common mistakes
- Confusing mass and weight.
- Mixing up distance–time and velocity–time graph gradients.