Contact and Non-contact forces Flashcards
1
Q
what is a force
A
a push or a pull that acts on an object
2
Q
all forces between objects are either _______ or ___ ______
A
contact or non contact
3
Q
what is a contact force
A
where the force is physically touching the object
4
Q
what is a non contact force
A
where the force is physically separated from the object
5
Q
what are examples of contact forces
A
friction, air resistance and normal contact force
6
Q
what is normal contact force
A
An object at rest on a surface exerts a force on the surface. The reaction force acts at right angles to the surface
7
Q
what are examples of a non contact force
A
gravitational force, electrostatic force, magnetic force
