**A100 -- Dan Swearingen Homework 6.
Due Tuesday, November 19 by the beginning of class**

*Page 282, Problem 3: Use the formula for the kinetic energy of
a moving body to estimate tthe energy of impact of a 1000 kilogram (roughly
1 ton) object hitting the Earth at 30 kilometers per second. Express your
answer in kilotons of TNT using the conversion that 1 kiloton is about
4 x 10 ^{12} joules. Note: be sure to convert km/sec to m/sec.*

First, lay out the formula and information given:

Plug in the numbers:

"Only" 110 tons of TNT. Of course, an iron meteor with 1000 kg of mass would only be about 18" on a side...