Answer:
Rebouncing
Explanation:
Since the two balls didn't move but bounced back, it's then said to be called rebouncing
A. Bohr
It's the Answer to your Question
Since we are only looking at the vertical height, we can use the free fall equation to find the height:
h = 0.5*g*t^2, where h is height in m, g is acceleration due to gravity (9.81 m/s^2), and t is time in seconds
h = 0.5*(9.81 m/s^2)*(3.7 s)^2
h = 67.15 m
Therefore, the 7th floor window is 67.15 m above ground level.
Using the Planck's Equation, comes:

If you notice any mistake in my english, please let me know, because i am not native.