Please help

A swimmer that pushes the water back with feet and arms What will happen to the movement of the swimmer as they push the water back?

If the swimmer exerts 5 n of force on the water how much force does the water exert back on swimmer?

For every action and there an equal and opposite reaction.

I don't understand your answer. Please explain further. Is this the answer to both?

You don't? Why does the floor hold you up(that is, why don't you sink into the floor?). Because the floor is pushing back with the same force you are pushing(standing) down. When you sit on a chair the chair pushes you up with the same force you are pushing down. If it didn't, the chair would collapse and you would fall to the floor. How do you think jet airplanes fly? The engine pushes exhaust gases from the engines backwards, so the reaction to that pushes the plane forward.

When a swimmer pushes the water back with their feet and arms, according to Newton's third law of motion, the swimmer will experience a reaction force from the water pushing them forward. This is known as action and reaction. In simple terms, for every action, there is an equal and opposite reaction.

The movement of the swimmer will be determined by the forces involved. When the swimmer pushes the water back, the water exerts an equal but opposite force on the swimmer, propelling them forward. This reaction force helps the swimmer move in the desired direction.

Now, if the swimmer exerts 5 N (Newton) of force on the water, the water will exert an equal 5 N of force back on the swimmer. This is because according to Newton's third law, the magnitude of both the action and reaction forces is equal.

It's important to note that the effect of this force depends on many factors, such as the swimmer's body position, technique, and the resistance of the water. Additionally, the overall motion of the swimmer will depend on other forces like drag and buoyancy.

Understanding the principles of action and reaction can help us comprehend how forces interact and affect the motion of objects in various scenarios.