Most geologists believe that the dinosaurs became
Chapter 9, Problem 57(choose chapter or problem)
Most geologists believe that the dinosaurs became ext.inclINT 65 million years ago when a large comet or asteroid struck theearth, throwing up so much dust that the sun was blocked out fora period of many months. Suppose an asteroid with a diameterof 2.0 km and a mass of 1.0 x I 013 kg hits the earth with animpact speed of 4.0 x I04 mis.a. What is the earth's recoil speed after such a collision? (Use areference frame in which the earth was initially at rest.)b. What percentage is this of the earth's speed around the sun?(Use the astronomical data inside the back cover.)
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