Final answer:
The toddler fell for approximately 0.32 seconds.
Step-by-step explanation:
To calculate the time the toddler fell for, we can use the equations of motion. The equation that relates distance, initial velocity, time, and acceleration is dy = (1/2)ayt^2. In this case, the distance dy = 0.53m and the acceleration in the vertical direction ay can be taken as the acceleration due to gravity, which is approximately 9.8 m/s^2. Plugging in these values, we get:
0.53 = (1/2)(9.8)t^2
Solving for t gives us t = 0.32 seconds. Therefore, the toddler fell for approximately 0.32 seconds.