For a more difficult training, football players in a training session have to push dummies that has an increased mass of 160 kg. If the players still push with a force of 150 N, what is the accelerati

For a more difficult training, football players in a training session have to push dummies that has an increased mass of 160 kg. If the players still push with a force of 150 N, what is the acceleration of the dummies?

Please Help, I don't understand it!