Explanation:
According to Newton's second law,
Net force of a object is always equal to the product of its mass and its acceleration.
Let [tex]F[/tex] be the net force applied.
Let [tex]m[/tex] be the mass of the body.
Let [tex]a[/tex] be the acceleration of the body.
So,[tex]F=ma[/tex]
It is given that [tex]a=1.4\text{ }ms^{-2}[/tex] and [tex]m=1.6kg[/tex].
So,[tex]F=ma=1.6\times 1.4=2.24N[/tex]