Momentum
Monday, November 5th, 2007The purpose of canoe racing is to make the boat move forward as quickly as possible. There are two basic parts to this:
- Get as much force as possible on the paddle in a way that puts the majority of the force helps your forward motion.
- Don’t let the boat slow down during the recovery.
The way you finish off your canoe stroke has a huge effect on keeping the boat running between strokes. This is equally true in any canoe, C-1, C-2, C-4, War Canoe, Dragon Boat, OC-6 or Coleman Canoe. I want to look at the exit today in terms of momentum and the action-reaction forces.
Imagine that at the end of the stroke you are sitting still in the boat. You need to move forward to get into position for the next stroke. Going from sitting still to moving forward requires an acceleration. Acceleration requires force, and physics says that for every force applied there must be an equal and opposite reaction force. From a practical perspective, this means that if you want to push something forward you have to have something to push against.
When you are in the boat the only thing you have to push against is the boat. Whether its your knee or your bum, the point that connects you to the boat is what you are pushing against to move your body forward. Now obviously the boat is not fixed, so what happens when you push against the boat to move yourself forward? The boat wants to move backwards.
We all know this. We can see it especially on the startline - the paddle goes up, the boat moves back. It is even more pronounced in boats like the Dragon Boat with more people all moving at once. When the boat is moving your body cannot cause it to start moving backwards but it will certainly slow down. The best way to minimize this effect is to get as far forward as possible while the paddle is still in the water.
Think back to the rocket ship effect. Making sure that the body is leaning forward before the paddle comes out is actually ensuring that your boat maintains its momentum in between strokes. Try thinking about that when you are learning about the exit.




