In triangle ABC
AB = hypotenuse = Net force = R
Using Pythagorean theorem
[tex]AB=\sqrt{AC^{2}+BC^{2}}[/tex]
[tex]R=\sqrt{10^{2}+10^{2}}[/tex]
R = 14.1 N
m = mass of the block = 2.0 kg
a = acceleration of the block = ?
Magnitude of the acceleration is given as
[tex]a=\frac{R}{m}\\[/tex]
[tex]a=\frac{14.1}{2}\\[/tex]
a = 7.05 m/s²