1
What is a force?
A push or pull on an object. Forces can speed things up, slow them down, or change direction.
👉 push · 👈 pull
Forces & Motion
📖 Study · Forces & Motion
Forces & Motion
A force is a push or a pull. Forces change how things move.
🎯 What you'll learn
- ✓Recognise gravity, friction
- ✓Know that force is measured in newtons
- ✓Predict simple motion
2
Gravity
Gravity pulls everything toward the centre of Earth. That's why things fall.
🍎 → 🌍
3
Friction
Friction is the force between two surfaces touching each other. It slows things down.
🛼 + 🛣️ → friction
4
Newtons
We measure force in newtons (N). 1 newton is roughly the pull of gravity on a small apple.
1 N ≈ 🍎
5
Motion without force
Without a force, a moving object keeps moving in a straight line forever.
→ → → →