# Question #59855

Jan 31, 2018

$8 k g$

#### Explanation:

From Newton's second law we know that:

force = mass * acceleration or $f = m a$

$\therefore m = \frac{f}{a}$

Substituting our values in

$m = \frac{56}{7} = 8$

$\therefore$ mass = $8 k g$