Which equations are dimensionally correct?

Question

F=ma
E=max
X=(1/2)at^3
V=sqrt(2*fx/m)
E=(1/2)mv

I think that F=ma , E=(1/2)at^3, V=sqrt(2*fx/m) are correct.

Would you agree?

Answer 1

ÑOrrect:
F=ma
E=max
V=sqrt(2*fx/m)
False:
X=(1/2)at^3
E=(1/2)mv