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AssignmentMultiple Choice

Lesson 2: Newton's First and Third Laws

Question 2 • POP Physics 26/27

Why are more firefighters needed to help hold the fire hose when the increase of water flow increases the force of the water?

Answer
A
When the force of the water increases, the reaction force pushing the hose back also increases.
B
When the force of the water increases, the reaction force pushing the hose back decreases.
C
When the force of the water increases, the reaction force pushing the hose back stays the same.

Explanation

By Newton’s third law, the water pushing forward out of the hose produces an equal and opposite force pushing the hose backward. When the water flow increases and its force increases, the backward reaction force also increases, so more firefighters are needed to hold the hose. Choice A correctly describes this increase.

AI-written and checked against the verified answer.

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