Newton's Second Law of Motion

Newton's Second Law of Motion states:

* Force (F) = Mass (m) x Acceleration (a)

Applying the Formula

* Mass (m): 50 kg

* Acceleration (a): 4 m/s²

* Force (F) = 50 kg * 4 m/s² = 200 Newtons (N)

Therefore, you would need a force of 200 Newtons to accelerate a 50 kg mass at 4 m/s².