A 71-Kg Man Is Standing in a 25-Kg Boat

question 24

Multiple Choice

A 71-kg man is standing in a 25-kg boat.The man steps to the right thinking he is stepping out onto the dock.However,the following will actually happen (ignore the friction of the water or air on the boat or the man) :

• A) The man only moves a short distance to the right while the boat moves a larger distance to the left.
• B) The man only moves a short distance to the left while the boat moves a larger distance to the right.
• C) The man actually stays still while the boat moves toward the left.
• D) The boat doesn't move and the man moves to the right.
• E) ​None of the above.

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Definitions:

Antibodies

Proteins produced by the immune system that recognize and bind to specific foreign substances called antigens to neutralize or destroy them.

Histamine

A compound found in body cells that plays a major role in allergic reactions, acting as a neurotransmitter and involved in the regulation of stomach acid.

Allergic Responses

Immune system reactions to certain substances, called allergens, that are normally harmless to most people.

Injured Tissues

This term refers to tissues in the body that have been damaged due to trauma, disease, or other factors, affecting their normal function.