Answer:

Fnet = m * a

20N = m * 5m/s2

We can rearrange the equation to get:

20N / 5m/s2 = m

m = 4kg

We know the answer is in kg because 1N = 1 kg*m/s2

The m/s2 cancel out, and 4kg remains.

Therefore, the mass of the object is 4kg

Explanation:

hope it help