Calulate the force needed to accelerate a 2,300 kg mass at 5.5m/s/s acceleration.

Answer 1

Have you tried Newton's old reliable #2?
F = m a

m = mass, kg
a = acceleration, m/s^2
F = Force, newtons

Answer 2

.41

Answer 3

Find the force needed accelerate a 3 kg object at 4m.s