Unformatted text preview: numericalresponse section on the answer sheet.) Numerical Response
02. In a vehicle safety test, a 1 580 kg truck travelling at 60.0 km/h collides with
a concrete barrier and comes to a complete stop in 0.120 s. The magnitude of the
change in the momentum of the truck, expressed in scientific notation, is
b × 10w kg.m/s. The value of b is __________.
(Record your threedigit answer in the numericalresponse section on the answer sheet.) 1 Use the following information to answer the next question.
At a coal mine, a train engine bumps an empty hopper car that has a mass of
1.00 × 104 kg such that it rolls at a constant speed of 2.00 m/s under a coal
storage bin. When the hopper car triggers an electromagnetic switch on the
track below the storage bin, the bin drops a load of 1.20 × 104 kg of coal into
the hopper car. Cross section
of coal storage bin
Hopper car 4
m = 1.00 × 10 kg v = 2.00 m/s Numerical Response
3. The speed of the hopper car immediately after receiving the load of coal, expressed
in scientific notation, is b × 10–w m/s. The value of b is...
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 Fall '09
 Quinlan
 Physics, Electron, Energy, Kinetic Energy, Electric charge

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