5) Tragically, the dinosaurs were wiped out 66 million years ago by the impact of a 10-km diameter asteroid (the “Chicxulub impactor”) near the Yucatan peninsula. Calculate the kinetic energy of the asteroid, assuming a mass of 4 × 1015 kg and an impact speed of 16 km/s. Give an answer both in units of Joules, and as a multiple of humanity’s total annual energy production of 6.352 · 1020 J.2