Two Spacemen Are Floating Together with Zero Speed in a Gravity-Free

question 2

Multiple Choice

Two spacemen are floating together with zero speed in a gravity-free region of space.The mass of spaceman A is 120 kg and that of spaceman B is 90 kg.Spaceman A pushes B away from him with B attaining a final speed of 0.5 m/s.The final recoil speed of A is:

• A)0 m/s
• B)0.38 m/s
• C)0.43 m/s
• D)0.50 m/s
• E)1.0 m/s

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Definitions:

Energy Intake

The amount of energy or calories consumed by an organism through food and drink; a crucial factor in nutrition and health.

Energy Use

Refers to the consumption of energy by human activities, primarily for power generation, transport, and manufacturing.

Vision

The ability to think about or plan the future with imagination or wisdom; also refers to guiding principles or aspirations that drive individuals or organizations.

Judgment

The ability to make considered decisions or come to sensible conclusions.