A ball is thrown horizontally from the top of a 69.0-m building
and lands 105.8 m from the base of the building. Ignore air
resistance. (Assume the ball is thrown in the +x direction and
upward to be in the +y direction.)
How long (in s) is the ball in the air?
What must have been the initial horizontal component of the
velocity (in m/s)? (Indicate the direction with the sign of your
What is the vertical component of the velocity (in m/s) just
before the ball hits the ground? (Indicate the direction with the
sign of your answer.)
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