A Meteoroid,heading Straight for Earth,has a Speed of 14

question 28

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, M_earth = 5.97 × 10²⁴ kg)

• A)18.5 km/s
• B)21.5 km/s
• C)32.4 km/s
• D)87.3 km/s

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Definitions:

Non-Coding DNA

DNA sequences that do not code for proteins but have regulatory and other functions, making up a large portion of the genome in many organisms.

Non-Coding Portions

Segments of DNA or RNA that do not code for proteins but have roles in gene expression and regulation.

Human DNA

The complex molecule that carries genetic information crucial for the growth, development, functioning, and reproduction of humans.