On the Earth, When an Astronaut Throws a 0

question 30

Multiple Choice

On the earth, when an astronaut throws a 0.250-kg stone vertically upward, it returns to his hand a time T later. On planet X he finds that, under the same circumstances, the stone returns to his hand in 2T. In both cases, he throws the stone with the same initial velocity and it feels negligible air resistance. The acceleration due to gravity on planet X (in terms of g) is

• A) g/4.
• B) g/2.
• C) g/ .
• D) g .
• E) 2g.

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Definitions:

Lymph

A clear fluid that circulates through the lymphatic system, carrying white blood cells and supporting the body's immune system.

Lipid Absorption

The process by which dietary fats are broken down and taken up into the bloodstream from the digestive tract.

Lymphatic System

A network of tissues and organs that help rid the body of toxins, waste, and other unwanted materials, primarily transporting lymph, a fluid containing infection-fighting white blood cells.

Erythrocytes

Red blood cells that carry oxygen from the lungs to the body tissues and carbon dioxide as a waste product away from tissues back to the lungs.