All Flashcards
Define Newton's Second Law.
The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
What is net force?
The vector sum of all forces acting on an object.
What is mass?
A measure of an object's inertia (resistance to acceleration).
Define acceleration.
The rate of change of velocity.
What is a Free-Body Diagram (FBD)?
A visual representation of all forces acting on an object.
What happens when the net force on an object is zero?
The object's acceleration is zero (it remains at rest or moves with constant velocity).
What is the effect of increasing the net force on an object?
The object's acceleration increases proportionally.
What happens to acceleration if mass increases and force is constant?
Acceleration decreases.
What is the effect of friction on a moving object?
It opposes the motion, causing deceleration.
What happens when tension is applied to a rope connected to an object?
The object experiences a force in the direction of the rope.
In a free-body diagram, what does the length of a force vector indicate?
The magnitude of the force.
In a free-body diagram, what does the direction of a force vector indicate?
The direction of the force.
What force is always present in a free-body diagram on Earth?
Gravitational force (), pointing downwards.
What is the direction of the normal force relative to the surface?
Perpendicular to the surface.
What does the tension force represent in a free-body diagram?
The force exerted along a rope or string.