Assume that a 10-km asteroid hits the earth at about 20 km/s An amount of water equal to about 30 times the mass of the asteroid will simply be splashed into the stratosphere above about 15 km. Roughly what fraction of the impact energy does this represent? About ____% of the impact energy is required to splash water equal to 30 times the mass of the asteroid into the stratosphere.

Assume that a 10-km asteroid hits the earth at about 20 km/s An amount of water equal to about 30 times the mass of the asteroid will simply be splashed into the stratosphere above about 15 km. Roughly what fraction of the impact energy does this represent? About ____% of the impact energy is required to splash water equal to 30 times the mass of the asteroid into the stratosphere.