Recent content by donchinkjao

Find acceleration vi=20.0 m/s[E] vf= 0 t= 12 s a= ? 0 =20+ a(12) 0-20 = a(12) -20/12=a -1.7m/s2 [E]= a textbook says it's 1.7m/s [W] Is it because when velocity decreases, it increases west (opposite direction)? Is -1.7m [E] same as 1.7m [W]??