3 attempts left A 83 kg skater moving at 5.9 m/s and a 80 kg skater moving at 3.4 m/s are moving in opposite directions and when they collide the two skaters stick together.

(a) What is their final speed? (b) How much kinetic energy is lost? Round all your answers to one decimal place.

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