Escape Vrlocity help? (1 Viewer)

donthaveaname

Member
Joined
Feb 10, 2008
Messages
56
Gender
Male
HSC
N/A
could somebody please explain this to me. it says in a book that

loss in kinetic energy= gain in GPE
1/2(mv^2)=(GmM)/R
V=(2GM/R)^0.5

but isnt GPE meant to be negative, so why is it positive here?

thanks
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top