An object with a mass of 20 kg has a net force of 80 N acting on it. What is the acceleration of the object?

0.25 m/s2

4 m/s2

60 m/s2

100 m/s2

Newton's 2nd law of motion says

Net force = (mass) x (acceleration)

Plug in the things you know, and you have

80 N = (20 kg) x (acceleration)

Divide each side by (20 kg):

80N / 20kg = acceleration

acceleration = 4 m/s²