Answer:
The answer is 7 kg
Explanation:
The mass of the object can be found by using the formula
[tex]m = \frac{f}{a} \\ [/tex]
where
f is the force
a is the acceleration
From the question we have
[tex]m = \frac{84}{12} \\ [/tex]
We have the final answer as
7 kg
Hope this helps you
