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Chapter 5: Newton's 2nd Law-Force and Acceleration Question
Chapter 5 Questions
12
Physics
11th Grade
12/18/2011

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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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