Answer:
m = 0.4 [kg]
Explanation:
Weight is considered as a force and this is equal to the product of mass by gravitational acceleration.
[tex]W=m*g\\[/tex]
where:
W = weight = 0.8 [N]
m = mass [kg]
g = gravity acceleration 2[N/kg]
Therefore:
[tex]m=W/g\\m = .8/2\\m = 0.4 [kg][/tex]