What is the mass of an object that requires a force of 30 N to accelerate at a rate of 5 msec2?

The mass of the object can be calculated using Newton's second law: force (F) = mass (m) x acceleration (a). Rearranging the formula to solve for mass, we get mass = force / acceleration. Substituting the values, mass = 30 N / 5 m/s^2 = 6 kg. Therefore, the mass of the object is 6 kg.