Physics 101
FORM 0
[lJ
When dividing several quantities, the number of significant digits in the result must always
be
[Allarger than the number of significant digits in the most accurate of the quantities
[B] equal to the number of significant digits in the most accurate of the quantities
[OJ equal
to the average number of significant digits in the most and least accurate of the
quantities
(@pequal to the number of significant digits in the least accurate of the quantities
[E]
smaller than the number of significant digits in the least accurate of the quantities
[2J How far does light travel in one year, moving at 3.0
X
10
8
m/s?
10
8
10
8
10
12
14
[A] 3.0
X
m
[B] 9.5
X
m
[0] 6.9
X
m
[D] 5.3
X
m
@J)9.5
X
15
m
[3]
At a given instant, the acceleration of a certain particle is zero. This means that
[A] the velocity is constant.
[B] the velocity is increasing.
©
the velocity is not changing at that instant.
[D] the velocity is decreasing.
[El the velocity is zero.
[4]
A car is traveling at 30.0
m/s when the driver suddenly applies the brakes, giving the car
a constant deceleration. The car comes to a stop in a distance of 120.0 m. What was the
deceleration of the car?
03.75
m/s
2
[B] 4.00
2
[0] 4.25 m/s
2
[D] 4.50
2
[E~
4.75
2
[5]
A vector 5.0 units long, pointing
45°
north of east, is added to a vector 12 uniis long,
pointing
45°
nO~M:
of west. The magnitude of the resultant
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 Spring '08
 Ashkenkai
 Physics

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