Homework Statement
A car moving with an initial velocity of 25 m/sec north has a constant acceleration of 3 m/sec2 south. After 6 seconds its velocity will be?
7 m/sec north
7 m/sec south
43 m/sec north
20 m/sec north
20 m/sec south
Homework Equations
Im not sure, but X-Xo=0.5( V + Vo)...