A Man in a Spacecraft That Is Moving with a Velocity

question 83

Multiple Choice

A man in a spacecraft that is moving with a velocity V₀ in free space runs forward and then stops.The center of mass of the system (that is,the ship and the man)

• A)slows while the man is running,then speeds up when he stops.
• B)slows while the man is running,then resumes its original velocity when he stops.
• C)moves faster while the man is running,then slows when he stops.
• D)moves faster while the man is running,then resumes its original velocity when he stops.
• E)continues all the while at its original velocity.

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Definitions:

Secondary Sexual Development

The physical changes that occur during puberty, aside from the reproductive organs, such as development of breasts in females and deepening of the voice in males.

Precocious Puberty

A condition where children start developing physical signs of puberty earlier than usual, typically before the age of 8 in girls and 9 in boys.

Pubertal Development

The physical changes during puberty that result in the development of secondary sexual characteristics and reproductive maturity.

Puberty

The developmental stage in which children's bodies begin to develop and change into those of an adult, marked by physical growth and sexual maturation.