level: Contact and non-contact forces
Questions and Answers List
level questions: Contact and non-contact forces
| Question | Answer |
|---|---|
| What are Contact Forces (& 4 Examples)? | Forces that act between two objects that are physically touching each other: 1) Reaction Force - object at rest on a surface 2) Tension - object stretched 3) Friction - 2 objects sliding past each other 4) Air Resistance - object moving through air |
| What's Newtons 3rd Law? | When a contact force acts between two objects, both objects experience the same size force, but in opposite directions |
| What are Non-Contact Forces (& 3 Examples)? | Forces that act between two objects that aren't physically touching each other: 1) Magnetic forces - felt by magnetic material in a magnetic field 2) Electrostatic force - felt by any charged particle in an electric field 3) Gravitational force - Felt by any mass in a gravitational field. Masses are attracted towards each other by gravitational force |