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# Plz, Great Scientists, Save Me!!!!!!! watch

1. HI,ppl, ESPECIALLY GREAT SCIENTISTS,
We ve just started 2day a coursework about kinetic and potential energy. In this coursework we r asked to explain and analise fully wat is going on when ball is pushed from the top down the ramp, meeting corrugated paper. I have done everything on explainin wat is happening to ball in ram, but I am confused how to explain wat happens wen he goes through corrugated paper horisontally. Wen he stops, his potential energy and kitenitc enegy r 0. Could u expain y these enrgies were increased detaily on the molecular bases, plz?

Thank you
2. (Original post by IZZY!)
HI,ppl, ESPECIALLY GREAT SCIENTISTS,
We ve just started 2day a coursework about kinetic and potential energy. In this coursework we r asked to explain and analise fully wat is going on when ball is pushed from the top down the ramp, meeting corrugated paper. I have done everything on explainin wat is happening to ball in ram, but I am confused how to explain wat happens wen he goes through corrugated paper horisontally. Wen he stops, his potential energy and kitenitc enegy r 0. Could u expain y these enrgies were increased detaily on the molecular bases, plz?

Thank you
sorry but didn't understand you!his?Who?what?
3. I ll make it more simple, bu attaching the diagram
Attached Files
4. science coursework.doc (23.5 KB, 101 views)
5. energy is lost doing work against friction so the kinetic energy decreases
6. (Original post by Speciez99)
energy is lost doing work against friction so the kinetic energy decreases
I know the basic stuff, how to explain this, but i am aiming to get A*, so i need to explain it on molecular basis,e.g how the energy is lost doing work against friction, not only the point answer. It should be fully explained. COuld u give me any hints how friction reduces energy?

thank you
7. Friction does work against motion, so reduces kinetic energy...
8. (Original post by mik1a)
Friction does work against motion, so reduces kinetic energy...
I have already stated that it should be explained on the molecular basis, not just with one sentence point.

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