If a ball is thrown from a top of a building downward and another one is dropped which one has the greater velocity?

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

Apulley with mass mp and a radius rp is attached to the ceiling, in a gravity field of 9.81 m/s2 and rotates with no friction about its pivot.

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water