A child applied 4 N of force to a toy with a mass of 2 kg. How much did the toy accelerate?

To find the acceleration of the toy, we first need to use Newton's second law of motion, which states:

\[ F = ma \]

Where:
F = force applied (4 N)
m = mass of the toy (2 kg)
a = acceleration of the toy

Now, we can rearrange the formula to solve for acceleration:

\[ a = \frac{F}{m} \]

\[ a = \frac{4}{2} \]

\[ a = 2 \, \text{m/s}^2 \]

Therefore, the toy accelerated at a rate of 2 m/s^2.