# Shared Flashcard Set

## Details

Newton's Laws
Newton's laws
14
Physics
11/11/2010

Term
 What is Newton's first law?
Definition
 An object continues in its state of rest or of uniform velocity in a straight line as long as no net force acts on it.
Term
 What is inertia?
Definition
 The tendency of an object to remain at rest
Term
 How is inertia measured?
Definition
 mass (kg)
Term
 What are some real world examples and applications of Newton's first law?
Definition
 A ball at rest in a moving car will roll forward when the car stops because of inertia.
Term
 What is mass?
Definition
 The measure of inertia in an object and the measure of the quantity of matter in an object
Term
 What is Newton's second law?
Definition
 Acceleration is directly proportional to the net force acting on it and is proportional to mass. Direction of acceleration is in the direction of net force.
Term
 What is the relationship between force, mass, and acceleration?
Definition
 ΣF=ma
Term
 What does it mean when the sum of the forces acting on a body are zero?
Definition
 There is no acceleration
Term
 What is the weight of an object?
Definition
 Fg=mg
Term
 What is the normal force?
Definition
 The force between an object and a surface perpendicular to it
Term
 What is the relationship between normal force and weight of an object?
Definition
 FN=mgcosθ
Term
 What is Newton's third law?
Definition
 Every action has an equal and opposite reaction FAB= -FBA
Term
 What is an interaction pair?  Why dont the forces cancel out?
Definition
 Two forces acting on each other don't cancel out because there is more than one force acting on each object
Term
 What is friction?
Definition
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