Respuesta :

F = ma 
12 = 0.2m
so m = 12/0.2 = 60kg 

Answer : m = 60 kg

Explanation :

It is given that,

Net force acting on an object is, F = 12 N.    

Acceleration produced on it, [tex]a=0.2\ m/s^2[/tex]

Newton's second law of motion gives the measure of force acting on the object. i.e.

F = m a

m is the mass

Using second law of motion we get :

[tex]m=\dfrac{F}{a}[/tex]

[tex]m=\dfrac{12\ N}{0.2\ m/s^2}[/tex]

[tex]m=60\ kg[/tex]

So, the correct option is (d).

Hence, this is the required solution.