chapter1 Flashcards
1
Q
what is force
A
a force is a push or pull that acts on an object
2
Q
what is contact force
A
when two objects must touch each other to interact
3
Q
what are examples of contact force
A
friction, air resistance, tension.
4
Q
what are examples of Non-contact force
A
magnetic force, electrostatic force, and the force of gravity
5
Q
the unit newton (N) is used for
A
Forces
6
Q
what is newton’s third law
A
when two objects pull or push on each other, they exert equal and opposite forces on one another.
7
Q
if the resultant force is zero then
A
the forces acted on the objects are balanced
8
Q
newtons first law states
A
that if an objects reluctant force is zero then it remains stationary if it was at rest else continues to move on at a constant (same) speed and direction if it was already moving
