A Spacecraft Is Measured by an Observer on the Ground

question 13

Short Answer

A spacecraft is measured by an observer on the ground to have a length of 53 m as it flies toward the earth with a speed 1.7 × 10⁸ m/s.The spacecraft then lands and its length is again measured by the observer on the ground,this time while the spacecraft is at rest on the launchpad.What result does he now get for the length? (c = 3.00 × 10⁸ m/s)

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Definitions:

DSM-5

The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, which is a manual for assessing and diagnosing mental disorders.

Disinhibition

The reduction of restraint through the loss of inhibition, which can result in acting out or exploring behaviors typically held in check by societal norms.

Narcissistic Personality Disorder

A mental condition characterized by a long-term pattern of exaggerated self-importance, need for admiration, and a lack of empathy for others.

Obsessive-Compulsive Personality Disorder

A personality disorder characterized by a preoccupation with orderliness, perfectionism, and control, at the expense of flexibility, openness, and efficiency.