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4. Derive an expression for gravitational potentialenergy for an object.5. Can any object have mechanical energy even if itsmomentum is zero ? Explain.6. Can any object have momentum even if itsmechanical energy is zero ? Explain.7. Why does a saw become warm when it is used tocut a wooden log? State the energy transformation.8. A stone is dropped from a height 'h'. Prove that theenergy at any point in its path is 'mgh'.9. Derive a relationship between linear momentum and kinetic energy.10. A light and a heavy object have the same momentum. Find out their ratio of kinetic energy. Which one has larger kinetic energy. |
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Answer» Answer: 10 QUESTIONS for only five POINTS ..... I can't SOLVE them.... really SORRY... |
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