Physics 30 June 2000 Diploma Exam

The fragments tremendous kinetic energy was


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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 A. B. C. 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 A. B. C. D. 0.15 m/s 0.22 m/s 0.33 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 A. B. C. 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, Larry has A. B. C. 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. Speakers R = 8.00 Ω Left channel speaker R = 8.00 Ω Right channel speaker A...
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