A 5 N force is defined when a mass of 10 kg is accelerated with

According to Newton's second law of motion, the force (F) acting on an object is the product of its mass (m) and its acceleration (a), expressed by the formula F = ma. To find the acceleration when the force and mass are known, the formula is rearranged to a = F / m. In this specific case, a force of 5 N is applied to a mass of 10 kg. By substituting these values into the equation, we get a = 5 N / 10 kg, which equals 0.5 m/s". The SI unit for force is the Newton (N), which is defined as the force required to accelerate a 1 kg mass at 1 m/s". Therefore, a 5 N force acting on a 10 kg mass results in an acceleration of 0.5 m/s", making option 2 the correct choice.