lesson 1 contact and non contact forces Flashcards
1
Q
what is a force
A
a push or pull that acts on an object due to the interaction with another object
2
Q
all forces have what
A
magnitude (size)
direction
3
Q
a force is a what
A
vector quantity
4
Q
what is the unit of force
A
newtons (N)
5
Q
forces are divided into which 2 categories
A
contact and non contact forces
6
Q
examples of a contact force is what
A
friction
air resistance
normal contact force
7
Q
examples of non contact forces
A
gravitational force
electrostatic force
magnetic force
