Answer:
10.52 kg
Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]m = \frac{f}{a} \\ [/tex]
f is the force
a is the acceleration
From the question we have
[tex]m = \frac{42}{3.99} \\ = 10.5263...[/tex]
We have the final answer as
10.52 kg
Hope this helps you
