25 kg
Explanation:
we can calculate the mass of the crate by using the Newton's second law:
\(F=ma\)
where
F is the force acting on the crate
m is the mass
a is the acceleration
In this problem, \(F=200 N\) and \(a=8 m/s^2\), so we can re-arrange the equation above to calculate the mass of the crate:
\(m=\frac{F}{a}=\frac{200 N}{8 m/s^2}=25 kg\)
