Key learning points

1. Pushes and pulls are forces. Different types of forces can be contact or non-contact forces.
2. Forces can change an object's speed, direction, and/or shape.
3. Forces can be measured using a force meter, also known as a newton meter.
4. A force meter works by stretching a spring – as the downward force due to gravity increases, the spring stretches.
5. Forces are measured in newtons (N), named after Sir Isaac Newton.

Keywords

• Force - A force is a push or a pull. Forces can make objects move, change speed, change direction or change shape.

• Force meter - A force meter is a piece of equipment used to measure the size of a force. It is also called a newton meter.

• Push - A push is a force that moves an object further away.

• Pull - A pull is a force that brings an object closer.

• Newtons (N) - The size of a force is measured in newtons.

Common misconception