Physics 30 June 01 Diploma Exam

As a result of the kick the football which was

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Unformatted text preview: nd _____. (Record all three digits of your answer in the numerical-response section on the answer sheet.) 5. Which of the following units are correct units for momentum? A. J.s B. C. D. N.m N.s N/J 3 Use the following information to answer the next four questions. The distribution of energy released during the burning of gasoline in a car is illustrated below. Energy Wasted as Heat from Engine Parts Energy Delivered to the Car’s Drive Train Used to accelerate car (15%) Wasted as heat from engine parts (80%) Energy released Used to overcome air resistance and frictional forces between tires and road (5%) Gasoline releases 30.2 MJ/L during burning. A particular car has a mass of 1.60 × 103 kg. In a test drive, the car accelerated from 3.00 m/s to 15.0 m/s over a distance of 115 m. 6. The maximum amount of energy that would be delivered to the drive train when 65.0 L of gasoline is burned is A. 1.51 × 102 MJ B. C. D. 3.93 × 102 MJ 1.96 × 103 MJ 9.82 × 103 MJ 4 7. The change in the kinetic energy of the car during the test drive is A. B. 1.15 × 105 J C. 1.73 × 105 J D. 8. 9.60 × 103 J 1.80 × 105 J The magnitude of the impulse on the car during the test drive is A. 4.80 × 103 kg.m/s B. 1.92 × 104 kg.m/s C. 2.40 × 104 kg.m/s D. 2.88 × 104 kg.m/s Use your recorded answer from Multiple Choice 8 to answer Numerical Response 3.* Numerical Response 3. The average net force on the car during the test drive, expressed in scientific notation, is a.bc × 10d N. The values of a, b, c, and d are ____, ____, ____, and ____. (Record all four digits of your answer in the numerical-response section on the answer sheet.) *You can receive marks for this question even if the previous question was answered incorrectly. 5 Use the following information to answer the next three questions. 90 m Ski Jump An elevation profile of the 90 m ski jump at Canada Olympic Park in Calgary is shown below. The skiers slide down a 111 m long ramp before taking off at the “table point.” The distance from the table point to the “norm point” (the beginning of the steepest section of the landing hill) is 90 m, hence the name of the jump. Farther downhill, at the end of a straight section of 24.0 m, is the “critical point.” If skiers fly past the critical point, it becomes dangerous to land because the landing hill starts to flatten out. 52.5 m Start point Table point 42.0 m Skier’s trajectory Norm point 79.2 m 14.4 m Take-off ramp 24 .0 m Critical point Landing hill During a ski jumping competition, a skier’s speed at the table point was 95 km/h, and she landed at the critical point with a speed of 85 km/h. The combined mass of the skier and her equipment was 60 kg. 9. The change in the skier’s gravitational potential energy as she moved from the table point to the critical point was A. B. C. D. –2.5 × 104 J –3.3 × 104 J –3.6 × 104 J –6.7 × 104 J 6 10. Current ski jumping techniques actually slow down the ski jumpers on the way to the bottom of the hil...
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This note was uploaded on 01/14/2014 for the course PHYSICS Physics 30 taught by Professor Quinlan during the Fall '09 term at Centennial High School.

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