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Kinetic and gravitational potential energy

9th grade (Year 10 in England) · 16 questions · Common Core: NGSS.MS-PS3-1, NGSS.MS-PS3-2, NGSS.HS-PS3-1, NGSS.HS-PS3-2 · England: KS4 Combined Science: Energy

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  1. Question 1

    What is the kinetic energy of a 80 kg object moving at 5 m/s? Use Eₖ = ½ m v².

    AnswerJ

  2. Question 2

    A ball is dropped from 10 m. Ignoring air resistance, all its gravitational potential energy becomes kinetic energy. How fast is it moving just before it lands, in m/s? Use g = 10 N/kg.

    Answerm/s

  3. Question 3

    An object of mass 0.5 kg is lifted 3 m. How much gravitational potential energy does it gain? Use Eₚ = m g h with g = 9.8 N/kg.

    AnswerJ

  4. Question 4

    What is the kinetic energy of a 60 kg object moving at 3 m/s? Use Eₖ = ½ m v².

    AnswerJ

  5. Question 5

    A ball is dropped from 20 m. Ignoring air resistance, all its gravitational potential energy becomes kinetic energy. How fast is it moving just before it lands, in m/s? Use g = 10 N/kg.

    Answerm/s

  6. Question 6

    An object of mass 5 kg is lifted 20 m. How much gravitational potential energy does it gain? Use Eₚ = m g h with g = 9.8 N/kg.

    AnswerJ

  7. Question 7

    What is the kinetic energy of a 60 kg object moving at 20 m/s? Use Eₖ = ½ m v².

    AnswerJ

  8. Question 8

    A ball is dropped from 20 m. Ignoring air resistance, all its gravitational potential energy becomes kinetic energy. How fast is it moving just before it lands, in m/s? Use g = 10 N/kg.

    Answerm/s

  9. Question 9

    An object of mass 50 kg is lifted 20 m. How much gravitational potential energy does it gain? Use Eₚ = m g h with g = 9.8 N/kg.

    AnswerJ

  10. Question 10

    What is the kinetic energy of a 2 kg object moving at 3 m/s? Use Eₖ = ½ m v².

    AnswerJ

  11. Question 11

    A ball is dropped from 45 m. Ignoring air resistance, all its gravitational potential energy becomes kinetic energy. How fast is it moving just before it lands, in m/s? Use g = 10 N/kg.

    Answerm/s

  12. Question 12

    An object of mass 0.5 kg is lifted 20 m. How much gravitational potential energy does it gain? Use Eₚ = m g h with g = 9.8 N/kg.

    AnswerJ

  13. Question 13

    What is the kinetic energy of a 10 kg object moving at 20 m/s? Use Eₖ = ½ m v².

    AnswerJ

  14. Question 14

    A ball is dropped from 5 m. Ignoring air resistance, all its gravitational potential energy becomes kinetic energy. How fast is it moving just before it lands, in m/s? Use g = 10 N/kg.

    Answerm/s

  15. Question 15

    An object of mass 60 kg is lifted 3 m. How much gravitational potential energy does it gain? Use Eₚ = m g h with g = 9.8 N/kg.

    AnswerJ

  16. Question 16

    What is the kinetic energy of a 60 kg object moving at 10 m/s? Use Eₖ = ½ m v².

    AnswerJ

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Answer key: Kinetic and gravitational potential energy

  1. 1. 1000 J

  2. 2. 14.1 m/s

  3. 3. 14.7 J

  4. 4. 270 J

  5. 5. 20 m/s

  6. 6. 980 J

  7. 7. 12000 J

  8. 8. 20 m/s

  9. 9. 9800 J

  10. 10. 9 J

  11. 11. 30 m/s

  12. 12. 98 J

  13. 13. 2000 J

  14. 14. 10 m/s

  15. 15. 1764 J

  16. 16. 3000 J