Force and Motion - Newton�s Laws
Newton�s 1st law:
Inertia, the tendency to continue in a given state.
Newton�s 2nd law:
The acceleration of an object is directly proportional to the net
force, and inversely proportional to the mass. F=ma
Newton�s 3rd law:
For every force, there is an equal and opposite force.
One Newton:
The force need to accelerate 1kg at 1 m/s/s.
Normal Force:
A reaction force pointing perpendicular to the surface.
Equilibrium:
When all the forces on an object balance out, or cancel out, the
object has a net force of 0.
Static Equilibrium:
When an object is in equilibrium, and not moving, this is called
static equilibrium.
Dynamic Equilibrium:
An object moving at a constant velocity; no net force acting on it.
Friction:
A force that always opposes motion.
Coefficient of friction:
The ratio between the frictional force and the normal force.
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