To find the mass (m) and final velocity (V), we can use the equation:

F = ma

Given that F = 8H and a = 2 m/s^2:

8 = m * 2

m = 8 / 2
m = 4 kg

Now, to find the final velocity (V), we can use the equation of motion:

V = at

Given that a = 2 m/s^2 and t = 2 s:

V = 2 * 2
V = 4 m/s

Therefore, the mass is 4 kg and the final velocity is 4 m/s.