According to Newton's second law of motion, the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass. Mathematically, it can be expressed as:

```

a = F/m

```

Where:

* a is the acceleration of the object

* F is the net force applied to the object

* m is the mass of the object

If the same net force is applied to two objects with different masses, the object with the smaller mass will experience a greater acceleration. This is because the force has a more significant effect on the lighter object, causing it to change its velocity at a faster rate.

In the case of a yo-yo with a mass of 0.5 kg, the acceleration due to the same net force will be twice the acceleration experienced by a yo-yo with a mass of 1 kg. This is because the yo-yo with a mass of 0.5 kg has half the mass of the other yo-yo, so the force has double the effect.