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Author Quiz
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1

Ignoring air resistance, an object falling toward the surface of the earth has a velocity that is
A)constant.
B)increasing.
C)decreasing.
D)acquired instantaneously.
2

Ignoring air resistance, an object falling toward the surface of the earth has an acceleration that is
A)constant.
B)increasing.
C)decreasing.
D)dependent on the weight of the object.
3

A ball rolling across the floor slows to a stop because
A)there are unbalanced forces acting on it.
B)the force that started it moving wears out.
C)all the forces are balanced.
D)the net force equals zero.
4

A heavy object and a light object are dropped from rest at the same time in a vacuum. The heavier object will reach the ground
A)before the lighter object.
B)at the same time as the lighter object.
C)after the lighter object.
D)It depends on the shape of the object.
5

A change in the state of motion is evidence of
A)a force.
B)an applied force that is unbalanced.
C)a force that has been worn out after an earlier application.
D)Any of these.
6

An object's __?__ determines the extent of resistance to a change of motion.
A)weight
B)density
C)mass
D)Any of these.
7

With all other factors equal, if you double the unbalanced force on an object of a given mass the acceleration will be
A)doubled.
B)increased fourfold.
C)increased by one-half.
D)increased by one-forth.
8

With all other factors equal, if you double the mass of an object while a constant unbalanced force is applied, the acceleration will be
A)doubled.
B)increased fourfold.
C)one-half as much.
D)one-fourth as much.
9

Doubling the distance between an orbiting satellite and the earth will result in what change in the gravitational attraction between the two?
A)one-half as much
B)one-fourth as much
C)twice as much
D)four times as much
10

If a ball swinging in a circle on a string is moved twice as fast the force on the string will be
A)twice as great.
B)four times as great.
C)one-half as much.
D)one-fourth as much.





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