Here's how to solve this using Newton's second law of motion:

Newton's Second Law:

* F = m * a

* F = Net force (in Newtons, N)

* m = Mass (in kilograms, kg)

* a = Acceleration (in meters per second squared, m/s²)

Given:

* m = 20 kg

* a = 10 m/s²

Solution:

F = (20 kg) * (10 m/s²)

F = 200 N

Therefore, a net force of 200 Newtons is required to accelerate a 20 kg object at 10 m/s².