Question

A man throws a ball straight upward with speed 30 m/s from the
top of a building that is 75 m high. Ignore air resistance and
**choose the vertical y-axis to be positive downward with
origin at the point of throw (top of the building).**

- Represent the initial velocity and the acceleration vectors in the reference y-axis above.

- Find the maximum height the ball reaches with respect to the ground.

- How long does it take the ball to reach the ground?

Answer #1

A ball is thrown upward with speed of 38.0m/s from top of
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