A coffee filter of mass 1.8 grams dropped from a height of 4 m reaches the ground with a speed of 0.8 m/s. How much kinetic energy Kair did the air molecules gain from the falling coffee filter? Start...

A coffee filter of mass 1.8 grams dropped from a height of 4 m reaches the ground with a speed of 0.8 m/s. How much

kinetic energy Kair did the air molecules gain from the falling coffee filter? Start from the Energy Principle, and choose as

the system the coffee filter, the Earth, and the air