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17 Terms
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1
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system
the collection of objects that are of interest
2
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closed system
a system in which masses do not enter or leave.
3
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Isolated system
a system in which no net external forces act on the object within it.
4
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momentum
the quantity of momentum. momentum is the product of mass and velocity, and because velocity is a vector, mass is also a vector
5
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=elapsed time- the definition of acceleration/change in time
6
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the change in momentum
7
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Fnet
the net external forcer
8
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Gravitational force (Fg)
Attractive force between two objects with mass.
9
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Gravitational field(g)
a model explaining the influence object extends to produce a force on other objects.
10
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Fg=G m1/m2 r^2
fg is gravitational force, G is the gravitational constant, m1 and m2 are point masses, r is the distance.
11
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g=Fg/m2=Gm1/r2
g is the gravitational field strength
12
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Resistance forces that can cause an
object to stop.= friction, air resistance, gravitation.
friction, air resistance, gravitation
13
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D=r/t is the scalar version of?
v= s/t
14
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Formula for 1 newton of force.
1N=1kgxm/s2
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Double the mass=
half the acceleration.
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*Double the force only=*
Double the acceleration
17
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Double the acceleration=
double the force
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