Laws of Motion · NEET Preparation Physics
A swimmer pushes water backward with his hands and moves forward. Which statement correctly explains this motion?
Practice question from Laws of Motion (NEET Preparation Physics), with the correct answer and a step-by-step solution.
easy · MCQ · Q-174D67
A swimmer pushes water backward with his hands and moves forward. Which statement correctly explains this motion?
- A.The backward force on water is greater than the forward force on the swimmer.
- B.The water exerts a forward force on the swimmer equal in magnitude to the backward force exerted by the swimmer on the water.Correct answer
- C.The swimmer moves forward because no external force acts on him.
- D.The forward force on the swimmer is produced by the swimmer's inertia.
Solution
By Newton's third law, the force exerted by the swimmer on the water and the force exerted by the water on the swimmer are equal in magnitude and opposite in direction. The latter pushes the swimmer forward.
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