Final answer:
To find the height of the table, we can use the equation of motion for an object in free fall. We can plug in the given values to calculate the height.
Step-by-step explanation:
To find the height of the table above the floor, we can use the equation of motion for an object in free fall. We can use the equation h = (1/2)gt^2, where h is the height, g is the acceleration due to gravity, and t is the time it takes for the object to fall.
In this case, the object falls from rest, so the initial velocity is 0 m/s. We are given the time it takes for the object to fall, which is 0.4 seconds. The acceleration due to gravity is approximately 9.8 m/s^2. Plugging these values into the equation, we can solve for the height h:
h = (1/2)(9.8 m/s^2)(0.4 s)^2 = 0.78 m
Therefore, the height of the table above the floor is 0.78 meters.