A relatively small impact crater 20 kilometers in diameter could be made by a comet about 2 kilometers in diameter traveling at 32 km/s (32,000 m/s). Assume that the comet has a total mass of 3.6x1012 kilograms. What is its total kinetic energy? (Hint. The kinetic energy is equal to mv, where m is the comet's mass and v is its speed.) Express your answer to two significant figures and include the appropriate units. ? K = Value J Submit Previous Answers Request Answer shoes Part B Convert your answer from part A to an equivalent in megatons of TNT, the unit used for nuclear bombs. (Hint One megaton of TNT releases 4.2 x 1015 joules of energy) Express your answer in megatons to two significant figures. ? VOI ET K = 5.10 megatons Submit Previous Answers Request