The question describes a scenario involving forces during swimming. This scenario is a direct application of Newton's Third Law of Motion.
Newton's Third Law Explanation
Newton's Third Law states that for every action, there is an equal and opposite reaction.
- Action: The swimmer exerts a force by pushing the water backward.
- Reaction: The water exerts an equal and opposite force on the swimmer, pushing the swimmer forward.
Therefore, the force that propels the swimmer forward is the reaction force exerted by the water on the swimmer.
Identifying the Correct Force
Based on Newton's Third Law:
- The swimmer pushes water backward (Action).
- The water pushes the swimmer forward (Reaction).
Option 1 correctly identifies this reaction force.
Options 2, 3, and 4 are incorrect because they misidentify the direction of the reaction force or the source of the propulsive force.
The correct option is 1: Water pushes the swimmer forward.
Important Questions from Motion
An object is covering distance in direct proportion to the square of time elapsed. What conclusion can be drawn about the motion of the object?
If the distance time graph of the motion of an object is a straight line but not parallel to the time axis, then it may be concluded that the object is moving with a:
Which of the following changes when a body performs uniform circular motion?
Vehicles have treaded tires so that it_______.
The _______ speed of a car at any instant can be determined by its speedometer.
