Question

7- Most geologists believe that the dinosaurs became extinct 65 million years ago when a large comet or asteroid struck the earth, throwing up so much dust that the sun was blocked out for a period of many months. Suppose an asteroid with a diameter of 2.0 km and a mass of 1.0 * 1013 kg hits the earth with an impact speed of 4.0 * 10* m/s and angle of 20 degree with x axis. a. What is the earth's recoil speed after such a collision? (Use a reference frame in which the earth was initially at rest.)b. What percentage is this of the earth's speed around the sun? (Earth orbital speed is 30.0 Km/sec

Answer 1

The answer for above problem is explained below.

Earth's recoil speed, Av= myo Mim 13 ani sv= 1x10 kg x 4x10" m/s 5.972x 1024 kg - 100 = 6.698 x 109 ms tare is this of the earth's speed around the Sun ès, Liga xiomis x 100 30x108 ml 2.232 x 100 %