Respuesta :

We know that:
F=ma
200N=m*5m/s²
m=200N/5m/s²
m=40kg
Force, F = ma,     

where m = mass in kg,  a = acceleration in m/s², F is in Newtons

200 = m*5

5m = 200

m = 200/5

m = 40

Mass = 40 kg.