Physics
posted by Iklishi .
An airplane passenger carries a 260 N suitcase up the stairs, a displacement of 3.80 m vertically, and 4.30 m horizontally.
(a) How much work does the passenger do?
(b) The same passenger carries the same suitcase back down the same stairs. How much work does the passenger do now?

Physics 
bobpursley
work= mg*height
this time,gravity does work on suitcase,so it is negative. 
Physics 
Iklishi
So how am I supposed to use the heights given from the problem? Subtract 4.30 m from 3.80 m?
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