Jacques and George Meet in the Middle of a Lake

question 79

Multiple Choice

Jacques and George meet in the middle of a lake while paddling in their canoes. They come to a complete stop and talk for a while. When they are ready to leave, Jacques pushes George's canoe with a force to separate the two canoes. What is correct to say about the final momentum and kinetic energy of the system?

• A)The final momentum is in the direction of but the final kinetic energy is zero J.
• B)The final momentum is in the direction opposite of but the final kinetic energy is zero J.
• C)The final momentum is in the direction of and the final kinetic energy is positive.
• D)The final momentum is zero kg∙m/s and the final kinetic energy is zero J.
• E)The final momentum is zero kg∙m/s but the final kinetic energy is positive.

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Definitions:

Pulse Rate

The number of heartbeats per minute, indicating the heart's health and efficiency.

Carotid Pulse

The palpable beat of the carotid artery, located on either side of the neck, which can be used to measure heart rate.

Diastole

The relaxation phase of the heartbeat; the period of least pressure.

Systole

The contraction phase of the heart; the greatest amount of blood pressure.