Q. An 86kg man drops from rest on a diving board 3.0m above the surface of the water and comes to rest 0.55s after reaching water. What is the net force on the diver as he is brought to rest?
Q. While one person shouts at a football game, the sound loudness at the center of the field is 50 dB. While all the people shout together the loudness enhancements to 110 dB. Suppose that each person is about the similar distance from the center of the field and can generate the similar level of sound intensity. How various people are at the game?