| What are Contact and Non-Contact Forces? | A Contact force has two things Touching [Pushing or Pulling]
Non-Contact Forces has two things not touching |
| Examples of Contact and Non-Contact Forces | Friction and Air Resistance are examples of Contact Forces
Electrostatics and Gravitational Forces are not examples of Contact Forces |
| What is a Interaction pair? | This is a pair of equal and opposite forces acting on two thing. Also known as a example of Newton's 3rd Law |
| Give an Example of a Interaction pair with a wall and yourself? | If you push against it, the wall will push back, which will lead to you not getting through. The force on the person and the wall equal and opposite |
| What is the Resultant Force and give an Example? | The Resultant Force is the overall Force on a object. If a ball falls with a Weight of 16N but has Air Resistance of 4N, The Resultant Force would be Weight with a Magnitude of 12N meaning the ball would go downwards |
| Is Force a Scalar or a Vector | They are a Vector. They have Magnitude and Direction |
| What is a zero resultant force meaning? Give an Example of a banana and a chair. | This means the Forces are Balanced out. The Banana is on a Chair. Its Weight is 7N but the non-contact force is also 7N. 7-7=0. |
| What is a Non-Zero Resultant Force. Give an example of a car accelerating. | This means the forces are unbalanced. A car accelerating means its Thrust will be greater then the Drag equalling acceleration.
However the weight and the non-contact is still balanced, so the car is not flying/sinking |
