Forces as Vectors - Forces and Energy Changes Flashcards
1
Q
What do all vector quantities have?
A
Magnitude (size)
Direction l
2
Q
Scalar quantities have magnitude but no what?
A
Direction.
3
Q
What force is it when two objects have to be touching?
A
Contact force.
E.g friction, air resistance, tension, normal contact force
4
Q
What force is it when the objects don’t need to be touching?
A
Non contact.
E.g magnetic, gravitational, electrostatic.
5
Q
Describe what an interaction pair is between two objects.
A
Where forces on two objects are equal in size but act in opposite directions.
