SOLUTION: An object is dropped from rest at a height of 118 m. Find the distance it falls during its final second in the air.

Use the formula for the distance / (the height) at free fall

    H = .   (1)


Here H is the height, g is the free fall acceleration, t is the time.


Let's find the time of getting ground for the object dropped from the height of 118 meters.


From formula (1)

    t =  =  = 4.9048 seconds (rounded).


One second back is the time  4.9048 - 1 = 3.9048 seconds.


In 3.9048 seconds, the dropped object will fall

    h =  = 74.7888 meters.


Hence, in the last second the object will fall 

    118 - 74.7888 = 43.21 meters, approximately.    ANSWER