A flowerpot is knocked off a balcony 20 m
above the sidewalk and falls toward an un-
suspecting 1.95 m tall man who is standing
How close to the side walk can the flower
pot fall before it is too late for a warning
shouted from the balcony to reach the man in
time? Assume that the man below requires
0.353 s to respond to the warning, and the
velocity of sound in air to be 342 m/s. The
acceleration of gravity is 9.8 m/s2 .
Answer in units of m.
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