Multiple Choice
A meteoroid,heading straight for Earth,has a speed of 14.8 km/s relative to the center of Earth as it crosses our moon's orbit,a distance of 3.84 × 108 m from the earth's center.What is the meteroid's speed as it hits the earth? You can neglect the effects of the moon,Earth's atmosphere,and any motion of the earth.(G = 6.67 × 10-11 N ∙ m2/kg2, Mearth = 5.97 × 1024 kg)
A) 18.5 km/s
B) 21.5 km/s
C) 32.4 km/s
D) 87.3 km/s
Correct Answer:
Verified
Correct Answer:
Verified
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