Average speed on Pontcysyllte Aqueduct

This is an amazing feat of engineering. I timed this narrowboat crossing. We walked the 307 metres almost as fast. It took 6 minutes and 20 seconds or 380 seconds. So the average speed was a little over 1 metre per second. Student will be required to know the usual average speed of various modes of transport for the new Physics GCSE. I suspect narrowboats won't be required.