All Flashcards
What is the effect of zero net force on an object?
The object maintains a constant velocity (either at rest or moving at a constant speed in a straight line).
What is the effect of unbalanced forces on an object?
The object accelerates (changes its velocity).
What happens when an object's mass increases?
Its inertia increases, making it harder to change its state of motion.
What happens if the reference frame is accelerating?
Newton's First Law does not directly apply; fictitious forces may be needed to explain motion.
What is Newton's First Law?
An object at rest stays at rest, and an object in motion stays in motion with the same velocity, unless a net force acts on it.
What is inertia?
Inertia is an object's resistance to change in its state of motion.
What is translational equilibrium?
Translational equilibrium occurs when the vector sum of all forces acting on an object equals zero, resulting in no net force and no acceleration.
What is static equilibrium?
Static equilibrium is when an object is at rest and the net force acting on it is zero.
What is dynamic equilibrium?
Dynamic equilibrium is when an object is moving at a constant velocity and the net force acting on it is zero.
What is an inertial reference frame?
An inertial reference frame is one in which Newton's first law holds true; it is a non-accelerating frame.
Define Newton's First Law.
An object maintains its state of motion unless acted upon by a net external force.
What is inertia?
The tendency of an object to resist changes in its state of motion.
Define translational equilibrium.
A state where the net force on an object is zero, resulting in constant velocity.
What is an inertial reference frame?
A reference frame in which Newton's First Law holds true; an object with no net force maintains constant velocity.
What is net force?
The vector sum of all forces acting on an object.