LifePac Physics Grade 12: Unit 3 Self Test 1 Exam
Questions and Correct
1. kinetic energy correct answer: energy of motion
2. acceleration due to gravity correct answer: potential energy/ mass x height
3. heat energy correct answer: energy that results when a temperature change occurs
4. solar energy correct answer: energy from the sun
5. work correct answer: the numerical equivalent of energy
6. tidal energy correct answer: energy supplied by the moon
7. geothermal energy correct answer: energy that is produced by heat from the earth
8. potential energy correct answer: energy of position
9. force correct answer: energy/ displacement
10. nuclear energy correct answer: energy derived from the nucleus of an atom
11. potential energy correct answer: a rock at the edge of a clitt
12. kinetic energy and potential energy correct answer: a plane in flight at
30,000 feet
13. potential energy correct answer: chemical energy stored in coal
14. potential energy correct answer: water behind a dam
15. kinetic energy and potential energy correct answer: water flowing
downstream
16. kinetic energy correct answer: a car moving on a level road
17. potential energy correct answer: a compressed spring
18. kinetic energy and potential energy correct answer: a child swinging
on a swing
19. kinetic energy and potential energy correct answer: a bouncing
ball
20. potential energy correct answer: geothermal energy
21. m= 10 g= 0.010 kg
KE = 1/2mv^2
= (1/2) (.01kg) (300 mpsec.)^2
= 450 kg x m^2 / sec.^2
= 450 J correct answer: Calculate the kinetic energy in joules of a 10 g bullet moving at 300 m/sec. Hint
correct answer: change grams to kilograms
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Questions and Correct
1. kinetic energy correct answer: energy of motion
2. acceleration due to gravity correct answer: potential energy/ mass x height
3. heat energy correct answer: energy that results when a temperature change occurs
4. solar energy correct answer: energy from the sun
5. work correct answer: the numerical equivalent of energy
6. tidal energy correct answer: energy supplied by the moon
7. geothermal energy correct answer: energy that is produced by heat from the earth
8. potential energy correct answer: energy of position
9. force correct answer: energy/ displacement
10. nuclear energy correct answer: energy derived from the nucleus of an atom
11. potential energy correct answer: a rock at the edge of a clitt
12. kinetic energy and potential energy correct answer: a plane in flight at
30,000 feet
13. potential energy correct answer: chemical energy stored in coal
14. potential energy correct answer: water behind a dam
15. kinetic energy and potential energy correct answer: water flowing
downstream
16. kinetic energy correct answer: a car moving on a level road
17. potential energy correct answer: a compressed spring
18. kinetic energy and potential energy correct answer: a child swinging
on a swing
19. kinetic energy and potential energy correct answer: a bouncing
ball
20. potential energy correct answer: geothermal energy
21. m= 10 g= 0.010 kg
KE = 1/2mv^2
= (1/2) (.01kg) (300 mpsec.)^2
= 450 kg x m^2 / sec.^2
= 450 J correct answer: Calculate the kinetic energy in joules of a 10 g bullet moving at 300 m/sec. Hint
correct answer: change grams to kilograms
1/
3
