# Shared Flashcard Set

## Details

Chapter 5: Newton's 2nd Law-Force and Acceleration Question
Chapter 5 Questions
12
Physics
12/18/2011

Term
 Pressure, equation
Definition
 F/A
Term
 Fluid
Definition
 anything that flows
Term
 Terminal velocity
Definition
 terminal speed together with the direction of motion, down for falling objects
Term
 Free body diagram
Definition
 A diagram showing all the forces acting on an object
Term
 Terminal speed
Definition
 The speed at whcih the acceleration of a falling object is zero because the force due to friction = weight (force due to mass)
Term
 Air resistance
Definition
 Friction or drag, acts on something moving through air or fluid
Term
 Units of Pressure
Definition
 N/m3,Pascal
Term
 Air resistance depends on three things, name them.
Definition
 Size of the object, speed of the object, density of the air or fluid.
Term
 Do objects have weight in a vacuum?
Definition
 Yes, they have mass. Only air resistance is missing in a vacuum.
Term
 Equation for Newton's Second Law
Definition
 (a= ∑F/m)
Term
 Equation for inversely proportional
Definition
 a= ∑F/m: a is inversely proportional to the mass
Term
 Equation for Proportional
Definition
 F=ma: Force is directly proportional to the mass.
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