I put that and it says it is wrong, maybe this program is just retarded

This post was edited by Elements_Fury on Sep 10 2013 01:06pm

Could try without the minus sign. Acceleration is a vector and therefore should include some indication of direction but perhaps they are asking for the magnitude of the acceleration. If this is the case, make sure you complain!

This post was edited by Azrad on Sep 10 2013 01:12pm