Answer:
a = 40 [m/s^2]
Explanation:
This problem can be solved using Newton's second law which tells us that the sum of forces acting on a body must be equal to the product of mass by acceleration.
F = m*a
where:
m = mass = 0.4 [kg]
F = force = 16 [N]
a = acceleration [m/s^2]
Now replacing we have:
16 = 0.4*a
a = 40 [m/s^2]
