5.4 What Do Forces Do? A Virtual Experiment
two identical rubber bands, each stretched to the standard length, exert twice the pull of one
rubber band: F(net)=2F
so F(net)=NF
an object pulled with a constant force moves with a constant acceleration
the object accelerates with a constant acceleration for as long as you pull it with a constant force
doubling the force casues twice the acceleration, triplin the force causes three times the
acceleartion, and so on.
the acceleration is directly proportional to the force
a=cF
c is called the proportionality constant and is the slope of the graph
an object twice the size of the original has only half the acceleration of the orignial object when
both are subjected to the same force
an object's mass is a measure of the ammount of matter it contains
the tendency of an object to resist a change in its velocity (i.e. to resist acceleration) is called
inertia
inertial mass "m" of an object is to be m = 1/(slope of the accelerationversusforce graph) = F/a
(the first equal sign should have three bars (is defined as))
this equation is another operational definition
We usually refer to the inertial mass as simply "the mass."
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 Spring '11
 Hilf
 Physics, Acceleration, Force, Inertia, Mass

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