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A ski lift elevates a skier of total mas...

A ski lift elevates a skier of total mass 70 kg a fertical displacement of 300 m.on ski slope.
What is the gain in the skier·'s gravitational potential energy ?

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S CHAND IIT JEE FOUNDATION-WORK AND ENERGY-SELF ASSESSMENT SHEET-3
  1. Answer true or false. Work done does not depend on time

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  2. Answer true or false. The sun is the source of most energy on Earth

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  3. Compare fossil fuels and biomass as energy resources.

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  4. Answer the following questions : Where does the kinetic energy come ...

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  5. Answer the following questions : Why are light bulbs so hot after th...

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  6. Answer the following questions : How much work had to be done to giv...

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  7. Answer the following questions : }lf the box weighs 200N, how far ab...

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  8. Answer the following questions : How is the kinetic energy of a movi...

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  9. Answer the following questions : its mass doubled

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  10. Answer the following questions : its velocity is tripled ?

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  11. Answer the following questions : A body falls freely under gravity f...

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  12. Answer the following questions : while falling

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  13. A body falls freely under gravity from rest. Name the kind of energy i...

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  14. A body is thrown vertically upwards ? Its velocity goes on decreasing...

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  15. two bodies A and B of equal masses are kept at heights of h and 2h res...

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  16. A truck weighing 5xx10^3 kgf and.a cart weighing 500 kgf are moving wi...

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  17. A ski lift elevates a skier of total mass 70 kg a vertical displacemen...

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  18. A ski lift elevates a skier of total mass 70 kg a fertical displacemen...

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  19. A bike is pedalled with 100 J·of energy and then coasts·. It does. 80 ...

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  20. Imagine that you drop a ball. It bounces a few times and then it stops...

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