IG Phy – Energy (II)
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Question 1 of 10
1. Question
1 point(s)Gravitational potential energy is measured in joules (J).
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Question 2 of 10
2. Question
1 point(s)The formula for gravitational potential energy is Ep=21mv2.
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Question 3 of 10
3. Question
1 point(s)Kinetic energy is given by the equation Ek=21mv2.
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Question 4 of 10
4. Question
1 point(s)A skier with a mass of 70 kg traveling up a 300 m ski-lift gains gravitational potential energy of 210 kJ.
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Question 5 of 10
5. Question
1 point(s)An ice skater with a mass of 50 kg traveling at 5 m/s has a kinetic energy of 125 J.
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Question 6 of 10
6. Question
1 point(s)The principle of conservation of energy states that energy can be transferred but not created or destroyed.
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Question 7 of 10
7. Question
1 point(s)When energy is transferred from kinetic to gravitational potential energy, the total energy remains constant.
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Question 8 of 10
8. Question
1 point(s)The kinetic energy at the top of a thrown stone\’s flight is maximum.
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Question 9 of 10
9. Question
1 point(s)The speed of a stone at the top of its flight is zero.
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Question 10 of 10
10. Question
1 point(s)Mechanical work done by gravity converts gravitational potential energy to kinetic energy.
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