Judy, by chance, spots a potted plant falling

outside the window at 2.88 m/s . Further
down the same building, Judy’s boyfriend
clocks the pot at 54 m/s .
How far apart are the friends? The acceler-
ation of gravity is 9.8 m/s2 .
Answer in units of m

Please give right answer and explain how you got it. Thanks!!