PHYS UN1401 Chapter Notes - Chapter 8: Emv, International Hockey Federation, Water Slide
4 Jan 2020
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(b) the sloth drops to the ground . For each choice of reference point , what is the change su in the potential energy of due to the fall ? the sloth - earth system. * the change in potential energy does not depend on the choice of the reference point for y=t;in stead it depends on the change in height dy . = 12kg 119. 81 mls "ll - 5 m ) Emei = kt u l mechanical energy ) A k = - au ka t u . Emv: + mgy ; emv ; t mgyb. A u ( x ) = - w = 8. 4 work done on a system by an external force. W =d emea = d k t d u. Fd = d e mec t d eth. Example: work, friction, change in thermal energy, cabbage heads m - F" = 40 n d = o . s m.
