If We Neglect the Effects of Air Resistance,the Impact Speed $\times$

question 19

Multiple Choice

If we neglect the effects of air resistance,the impact speed of a body of mass m released from rest at an altitude of 2 $\times$ 10⁸ m above the surface of Earth (m_e = 5.99 $\times$ 10²⁴ kg,r_e = 6.37 $\times$ 10⁶ m) is

• A)~3.92 \(\times\) 10⁹ m/s
• B)~6.26 \(\times\) 10⁴ m/s
• C)~1.10 \(\times\) 10⁴ m/s
• D)~1.21 \(\times\) 10⁸ m/s
• E)None of these is correct.

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Definitions:

Compulsion

An irresistible urge to behave in a certain way, especially against one’s conscious wishes.

Phobia

A profound and unreasonable dread or dislike towards a specific thing.

Conversion Reaction

A mental health condition where psychological stress is expressed through physical symptoms, without an underlying physical cause.

Obsessive-Compulsive Disorder

A mental disorder characterized by recurring, unwanted thoughts (obsessions) and repetitive behaviors (compulsions) that a person feels driven to perform.