Question
Large meteors sometimes strike the Earth, converting most of their kinetic energy into thermal energy.
1. What is the kinetic energy of a $10^9 \textrm{ kg}$ meteor moving at 25.0 km/s?
2. If this meteor lands in a deep ocean and 80% of its kinetic energy goes into heating water, how many kilograms of water could it raise by $5.0\textrm{C}^\circ$
3. Discuss how the energy of the meteor is more likely to be deposited in the ocean and the likely effects of that energy.
1. $3 \times 10^{17} \textrm{ J}$
2. $1 \times 10^{13} \textrm{ kg}$
3. Meteorites would be more likely to transfer their energy into kinetic energy of the water, rather than thermal energy. This would cause a tidal wave.
Solution Video