8.1 Flashcards
1
Q
Gravity:
A
Gravity: The force of attraction that exists between any two bodies in the universe that have mass. The gravity at the Earth’s surface is the pull on objects near its surface towards the centre of the Earth
2
Q
Force
A
Force: (noun) a push, pull or twist. Forces are measured in newtons (N). (verb) to push, pull or twist
3
Q
Contact force
A
Contact force: A force that acts only between objects that are touching
4
Q
Non-contact force
A
Non-contact force: a force that acts between objects even though the objects are not touching
5
Q
Electrostatic forces:
A
Electrostatic forces: A non-contact force of electric charges at rest. We experience electrostatic forces when we pull off a jumper and our hair stands on end
6
Q
Magnetic forces
A
Magnetic forces:
