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9th Grade Science Questions
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9th Grade Science Questions
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1. Ionization energy

2. electrical energy

3. A skier races downhill at a rate of 1.7 m/s2, but came in second place. The competitor who came in first had a mass of 52 kg. If both skiers were recorded going the same acceleration, how much net force did the first place skier exert in the competition?

4. metals

5. 320 mL =

6. Thomson's model

7. elastic energy

8. A ball with a mass of 0.25 kg is thrown so that it has a velocity of 12 m/s. What is its kinetic energy?

9. Heat energy

10. 1 cm =

11. 100 cm =

12. A new test rocket was launched from a local field. The rocket had a mass of 528 kg and accelerated at 37.9 m/s2. What was the force exerted by the rocket as it traveled through the air?

13. atomic radius

14. A motorbike has 4500 J of KE and is traveling at 15 m/s. What is its mass?

15. thermal energy

16. halogen

17. noble gas

18. theory

19. Light released from atoms due to.

20. Two students were investigating the effects of force on four different duper bouncy balls when dropped a distance of 2.5 m. If each super bouncy ball accelerates at 9.8 m/s2, which two super bouncy balls would exert forces less than 11 N on the ground when it hits?

21. transition metal

22. A rock has kinetic energy of 110 J and is traveling at a velocity of 3 m/s. What is its mass?

23. diatomic elements

24. period

25. empirical evidence

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