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# A ball is thrown horizontally from the top of a 55.0-m building and lands 106.8 m...

A ball is thrown horizontally from the top of a 55.0-m building and lands 106.8 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? s

(b) What must have been the initial horizontal component of the velocity (in m/s)? (Indicate the direction with the sign of your answer.) m/s

(c) 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.) m/s

(d) What is the velocity (in m/s) (including both the horizontal and vertical components) of the ball just before it hits the ground?

magnitude in m/s

direction: ° counterclockwise from the +x-axis †

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