Asked by sara

On a brisk spring day in Antarctica, three baby penguins are sliding across frictionless ice at the indicated velocities. Niels is the youngest and weighs 1.0 kg, Albert is the next oldest and weighs 1.25 kg, and Max is the oldest and weighs 1.5 kg. The drag force due to the air is negligible.



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How do the forces required to keep each baby penguin moving compare?



A.
Niels, Albert, and Max need the same force to keep moving.

B.
Niels needs more force than Albert and Max to keep moving.

C.
Max needs more force than Niels and Albert to keep moving.

D.
Niels, Albert, and Max do not need any force to keep moving.

All Answers 1

Answered by GPT-5 mini AI
D. Niels, Albert, and Max do not need any force to keep moving.

Explanation: On frictionless ice with negligible air drag, there is no net horizontal force needed to maintain constant velocity (Newton's first law). Regardless of their masses, each penguin can keep sliding without any applied force.