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Unformatted text preview: 0 × 108 J C. 1.80 × 1011 J D. 1.08 × 1013 J Numerical Response
4. The increase in kinetic energy of the Shoemaker-Levy 9 comet fragment as it
moved from 8.50 × 109 m to 1.00 × 108 m from the centre of Jupiter, expressed
in scientific notation, was b × 10w J. The value of b is __________.
(Record your three-digit answer in the numerical-response section on the answer sheet.) 4 7. When the comet fragment’s kinetic energy was dissipated in the explosion, most of
this energy was converted to
D. potential and kinetic energy
chemical energy only
light and heat
light only Use the following information to answer the next question. 0.1 4m /s Sheet of Curling Ice Red curling rock Blue curling rock 67°
23° 0.36 m/s A red curling rock travelling straight down a sheet of ice at 0.36 m/s contacts
a stationary blue curling rock. After contact, the blue rock moves at 0.14 m/s
at an angle of 67° and the red rock moves at an angle of 23°, as illustrated.
The mass of a curling rock is 18.8 kg.
8. The speed of the red rock, after contact, is
D. 0.15 m/s
0.39 m/s 5 9. A rock climber falls and is saved from injuries by a climbing rope that is slightly
elastic. The importance of the elasticity of the climbing rope can be understood in
terms of impulse because elasticity results in
D. 10. decreased force during an increased time interval
increased force during an increased time interval
decreased force during a decreased time interval
increased force during a decreased time interval Two boys, Ted and Larry, initially at rest, push each other apart on a frictionless
surface. Ted has a mass of 40 kg and Larry has a mass of 60 kg. After the
boys push each other apart, Ted has a speed of 6 m/s. As the boys move apart,
D. more momentum than Ted
less momentum than Ted
more kinetic energy than Ted
less kinetic energy than Ted 6 Use the following information to answer the next two questions.
R = 8.00 Ω
speaker R = 8.00 Ω
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- Fall '09