A ball is thrown straight up from the edge of the roof of a
building. A second ball is dropped from the roof a time of 1.14 s s
later. You may ignore air resistance.
Part A. If the height of the building is 20.0 m m , what
must the initial speed be of the first ball if both are to hit the
ground at the same time? Express your answer in meters per
second.
Part B Consider the same situation, but now let the initial
speed v0 of the first ball be given and treat the height h h
of the building as an unknown. What must the height of the building
be for both balls to reach the ground at the same time for v0
= 8.75 m/s m / s . Express your answer in meters.
Part C If v0 is greater than some value vmax ,
a value of h h does not exist that allows both balls to hit the
ground at the same time. Solve for vmax . Express your answer in
meters per second.
Part D If v0 is less than some value vmin , a value
of h does not exist that allows both balls to hit the ground
at the same time. Solve for vmin . Express your answer in meters
per second.