Force 50N imparts acceleration 0.8m / s ^ 2 to the body. What force will impart an acceleration of 3.2 m / s ^ 2 to this body?

Thanks to Newton’s second law and the formula from the second law, we can find out accelerations, force and mass. First, we find m because it does not change despite the force and acceleration
F = m * a; m = F / a =) 50 / 0.8 = 62.5 (kg)
Now just substitute the values
F = 62.5 * 3.2 = 200 (H)
Answer: F = 200 (H)