Almost everybody knows what kayaking and a majority of the population probably have kayaked before. However, like many other things in the world, people may have not thought of the physics of kayaking which is a perfect example of Newtons Third Law. While paddling, you are applying a force on the water by torque on the paddle. If you have ever experimented with paddling, if you hold further towards the end of the paddle, if is easier to go faster. However, if you choke up the the paddle alot you wont be ablle to go as fast because, due to the length of the "lever arm" being decreased, the torque applied to the water is much less. When you apply the force onto the water, by Newton's Third Law, the water applies an equal an opposite force on you (and the kayak) pushing you forward and allowing you to move.