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what is newtons first law
an object at rest stays at rest
whats inertia
the resistance of an object to changes in its state of motion.
another name for newtons first law
the law of inertia
the measure of an object's inertia.
mass
What are the two components of velocity for an object in motion?
Speed and direction.
It is possible for an object to be moving and have no net force acting on it.
yes
What type of force is needed to change an object's motion?
An unbalanced or net external force.
If a moving object's net force is zero, what will its motion be?
It will continue to move with a constant velocity.
The force of air resistance and the force of friction are examples of external forces.
true
how do balanced forces relate to the law
The law applies when forces are unbalanced.
When is an object in a state of equilibrium?
When the net force on it is zero, and it is either at rest or moving at a constant velocity.
whats netforce
The sum of all forces acting on an object.
The state of motion an object will have if no external force acts upon it.
constant velocity