Make a line a known distance from your net, film yourself shooting so the puck leaves your stick at that line. The longer the distance the more accurate this will be. Use the video to measure the amount of time it takes the puck to travel the distance to the net then Speed = distance divided by time.
Edit: Better yet, shoot from before a line (say 5 feet before it) that marks a known distance to another line, then find time puck the puck crosses that line to when it passes another line from video. Same formula. Again, the longer the distance between the two lines, the less your calc will be affected by the error on the time measurement from the video.
you _5ft__ line runs perpendicular to path of puck ____ known distance ____ line runs perp to path of puck ___ net
Last edited by Semper Sens: 11-20-2011 at 07:38 PM.
i like the idea with the audio much, maybe i will try it with my shot
i just want to say something about the example of measuring the destance and time of the puck
you are right that the longer the way u are measring the more accurate is ur calculation.
the problem is the longer the way is the more the puck will slow down. u calculate the average speed of the way and with a longer way u will move away more and mroe from ur top speed. so i think the idea with the audio is better because u can measure a small time line very accurate with waveline-tools.
Oh, I just recorded audio of me at a lacrosse box, then looked at the sound waveform in an audio editor to measure the time between shot and ball/puck hitting the boards.
But I could write an app that does the same thing automatically. I'm tempted just todo it for myself, but super busy at the moment with other apps I'm releasing and updating in the next month.
Yeah, i downloaded an app that that would show the times down to the 100th of a second on a waveform, but it was hard to figure out precise distances at the rink I was at today, it wasn't regulation size so I didn't trust any of the measurements from a normal rink.