This document discusses different types of forces, including gravity and magnetism which can act over distances without direct contact, as well as friction and upthrust which require direct contact between objects. It notes that all forces involve interactions between objects and that all types of forces can occur whether objects are moving or still.

1. Types of forces

2. All forces involve interactions
between objects. There are
several different types.
Types of forces

3. All forces involve interactions
between objects. There are
several different types.
Types of forces
Gravity and magnetism
are forces that can act over
distances.

4. All forces involve interactions
between objects. There are
several different types.
Types of forces
Gravity and magnetism
are forces that can act over
distances.
Friction and upthrust are
forces that involve direct
contact between objects.

5. All forces involve interactions
between objects. There are
several different types.
Types of forces
What forces are acting during this rocket launch?
All types of forces can occur whether objects are still or moving.
Gravity and magnetism
are forces that can act over
distances.
Friction and upthrust are
forces that involve direct
contact between objects.