Objects Affecting Each Other Flashcards
1
Q
What is a contact force?
A
Forces which only act when objects are in contact/touching each other
2
Q
Example of contact forces
A
Push Pull Upthrust Water/air resistance Friction Reaction force - normal contact force
3
Q
What is a non-contact force?
A
Forces that can act when objects are touching or when they aren’t touching
4
Q
Examples of non contact forces
A
magnetism
Gravity
Electrostatic
5
Q
What happens to a non contact force as the distance increases?
A
It decreases as objects get further apart
6
Q
What is a force field?
A
Space around a object where it can affect other objects.
Non contact forces work by creating a force field.
7
Q
Gravitational field:
- Which way do the arrows go
- what objects does it affect
A
- arrows towards central object (eg. earth) pulling the other object down
- affects any object with mass
8
Q
Magnetic field:
- what shape do the arrows form?
- what objects does it affect
A
- form horseshoe shapes around objects with magnetic fields
- flow from N —> S
- affects magnetic objects
9
Q
Electric field (electrostatic force)
- what shape or. Direction are the arrows in
- what objects does it affect
A
- forms around charged objects
- charges flow +ve —> -ve
- affects other charged and non-charged objects
