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What is the definition of Inertia?
An object's resistance to changes in its motion.
What is the definition of Force?
A push or pull that can cause an object to accelerate.
What is the definition of Net Force?
The total force acting on an object (sum of all forces).
What is the definition of Mass?
A measure of how much stuff is in an object and its resistance to acceleration.
What is the definition of Acceleration?
The rate at which an object's velocity changes.
What is the definition of Velocity?
An object's speed and direction.
What is the definition of Centripetal Force?
The force that keeps an object moving in a circle, always directed towards the center.
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 acted upon by a net force.
State Newton's Second Law.
The net force on an object is equal to its mass times its acceleration: $$F_{net} = ma$$
State Newton's Third Law.
For every action, there is an equal and opposite reaction.
What is the effect of applying a net force on an object?
The object accelerates in the direction of the net force.
What happens when an object moves in a circular path?
It experiences a centripetal force directed towards the center of the circle.
What happens when you push on a wall?
The wall pushes back on you with an equal and opposite force.
What is the effect of increasing the net force on an object, assuming mass remains constant?
The acceleration of the object increases proportionally.
What is the effect of increasing the mass of an object, assuming net force remains constant?
The acceleration of the object decreases proportionally.
What happens if there is no net force acting on an object?
The object maintains its state of motion (either at rest or moving with constant velocity).
What are the differences between mass and weight?
Mass: Measure of inertia, scalar quantity | Weight: Force due to gravity, vector quantity.
What are the differences between static and kinetic friction?
Static friction: Prevents motion from starting | Kinetic friction: Opposes motion of moving objects.
What is the difference between action and reaction forces?
Action force: Force exerted by one object on another | Reaction force: Equal and opposite force exerted by the second object back on the first.
What is the difference between speed and velocity?
Speed: Magnitude of how fast an object is moving (scalar) | Velocity: Magnitude and direction of how fast an object is moving (vector).
What is the difference between force and net force?
Force: A single push or pull | Net Force: The vector sum of all forces acting on an object.