A Meteoroid, Heading Straight for Earth, Has a Speed of 14.8

question 45

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 meteoroid'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

---

Definitions:

Detachment

For Bowlby, the state of indifference toward others experienced by children who have been separated from their caregivers for an extended time and have not formed new stable relationships.

Primary Caregiver

A primary caregiver is the main person who provides direct care and support to a child, elderly, or an individual with disabilities, facilitating their daily needs and emotional well-being.

Surrogate Mothers

Women who carry and give birth to a child for another person or couple, often through a legal agreement.

Social Interactions

Exchanges between two or more individuals, influencing each other's feelings, behaviors, and thoughts.