Respuesta :

m = 50 kg ( mass of a wagon ), F 1 = 100 N
F 2 = 200 N
F = 200 N - 100 N = 100 N
F = m * a  ( the Second Newton`s Law, where a is an acceleration )
a = F / m
a = 100 N / 50 kg
a = 2 m/s^2
Answer: The acceleration is 2 m`s^2